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Fein ASCM 18-4 QM — Review & Specs | Pricepect | Pricepect

Home DrillsFein ASCM 18-4 QM

📦

Fein

Fein ASCM 18-4 QM

$349.95

QM AS Bare Tool

Expert Review Analysis

The Fein ASCM 18 QSW AS is a compact, lightweight 18V brushless cordless drill/driver featuring a 4-speed metal gearbox and the QuickIN interchangeable chuck system. Designed primarily for professional metalworking, it offers high torque, rapid accessory swaps, and extended battery life through COOLPACK technology.

✓ Best for: Professional metalworkers, fabricators, and contractors who require high-torque, high-speed precision in a compact form. Specific use cases include metal drilling (1/16" to 3-1/8" holes), tapping up to 1/2", using carbide hole saws, screwdriving (900+ per charge), and masonry work with the hammer mode.✗ Not ideal for: General consumers or DIY enthusiasts who do not require four-speed gearboxes or specialized metalworking capabilities. Users who prefer all-in-one kits with included batteries may find the bare tool configuration inconvenient. Those primarily working with wood or general construction may not need the specialized features offered by this tool.

Pros

✓QuickIN interchangeable chuck system allows rapid swapping of accessories like bit holders and socket drivers
✓Lightest 4-speed drill on the market at 2.87 lbs, providing superior agility and reduced user fatigue

Best Seller Rank History

Now#964Best#964Worst#1,418 +233

Lower = better sales rank

Rating Trend

Rating5.0/ 5Reviews1

Specifications

Battery

Battery ChemistryLi-ion / CORE 18 V Li-ions

Battery InterfaceAMPShare

Battery TechnologyCOOLPACK 2.0

Battery Life Extension135% longer

Recharge Time~30 min minutes

Features

Chuck Type1/2-inch QuickIN solid metal

Chuck Jaw MaterialCarbide

Chuck Clamping Force1,062 in/lb in/lb

Kickback MonitoringYes

LED LightingDimmable

General

BrandFein

ModelQM AS Bare Tool

Height252 mm mm

Width79 mm mm

Length217 mm mm

Performance

Gearbox Speeds4-speed

Gearbox MaterialFull metal

No-load Speed 1430 rpm rpm

No-load Speed 2850 rpm rpm

No-load Speed 32,000 rpm rpm

Power

Battery Voltage18 V V

Motor TypeBrushless

Motor Efficiency30% greater

Motor Efficiency

Brushless Efficiency Gain30% greater efficiency compared to brushed motors

Battery Technology

COOLPACK 2.0 Life Extension135% longer battery life compared to standard lithium-ion

Research Sources

trick-tools.com

news.ohiopowertool.com

protoolreviews.com

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User Reviews

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5.0

(1 reviews)

✓Brushless motor delivers 30% greater efficiency and includes kickback monitoring for enhanced safety

✓Four-speed metal gearbox provides up to 4,000 rpm, doubling the speed of typical 2-speed rivals

✓COOLPACK 2.0 battery technology extends battery life by 135% compared to standard lithium-ion cells

✓Electronic torque control offers 15+1 precise steps for accurate screwdriving and tapping operations

✓Fully encapsulated motor protects internal components from dust and debris during heavy-duty use

Cons

✗Sold as a bare tool requiring separate purchase of batteries and charger, increasing initial cost
✗Four-speed gearbox and specialized features may be unnecessary complexity for general household users
✗Higher torque variants may feel bulkier compared to the base QSW model for tight-space applications
✗Limited direct consumer feedback available, making long-term reliability less verified by general public
✗Niche design focused on metalworking may not offer optimal performance for heavy wood construction tasks

From Expert Reviews

Praised by Experts

✓Brushless PowerDrive motor and 4-speed all-metal gearbox deliver uncompromising power in a compact package
✓QuickIN system enables seamless transitions between drilling, tapping, and countersinking without tool changes
✓Capable of driving up to 900 screws per battery charge, demonstrating exceptional efficiency for professionals
✓Telescopic handle and ergonomic design provide excellent control and comfort during demanding jobsite tasks
✓Precision features like depth stop and dimmable LED lighting enhance accuracy in detailed metalworking projects

Criticized by Experts

✗Higher torque variants may feel bulkier than the base QSW model, potentially affecting maneuverability
✗Specialized metalworking focus limits broad appeal for contractors who primarily work with wood or masonry
✗Bare tool configuration requires users to invest separately in compatible AMPShare batteries and chargers

From User Reviews

Users Love

✓Brushless motor construction ensures years of reliable performance without significant maintenance requirements
✓Interchangeable chuck system significantly simplifies driving ease and reduces time spent on tool adjustments
✓High power output in a lightweight body allows for efficient drilling and screwdriving in confined spaces
✓Versatile functionality handles multiple tasks including drilling, tapping, and countersinking effectively

Users Complain About

✗Some users prefer the convenience of included batteries rather than purchasing them separately for the bare tool
✗Limited direct consumer complaints found, though reliance on separate battery purchase is a noted drawback
✗General users may find the advanced features and 4-speed options unnecessary for basic home improvement tasks

Expert Opinion

Professional reviewers and editors consistently praise the Fein ASCM 18 QSW AS as a top-tier tool for metalworking and construction. Experts highlight its 'uncompromising power' and speed, noting that its 4,000 rpm capability outpaces competitors. The QuickIN system is frequently cited as a game-changer for versatility, allowing rapid accessory swaps. Reviewers also commend the brushless motor's efficiency and the tool's lightweight design, which enhances control during heavy-duty tasks like drilling 3-1/8 inch holes.

What Users Say

Everyday users and YouTube reviewers express high satisfaction with the tool's durability and versatility. Common praise centers on the brushless motor's longevity and the ease of use provided by the interchangeable chuck system. Users appreciate the power-to-weight ratio, noting that it handles screws and drilling efficiently. While there are no major complaints, some users note a preference for kits that include batteries rather than bare tools.

Common Complaints

Bare tool configuration requires separate purchase of batteries and charger. Specialized features may be unnecessary for general household users. Limited consumer feedback available for long-term reliability verification

What People Are Saying

“years of performance”
5/5 ★YouTube reviewer (ASCM18QX variant)Nov 2025

“interchangeable chuck for driving ease”
5/5 ★YouTube reviewer (ASCM18QX variant)Nov 2025

How It Compares

vs. Bosch 18V 4-speed drills

Advantages

✓Fein is lighter at 2.87 lbs compared to Bosch's typical 3.5-4.5 lbs
✓Fein offers 4,000 rpm max speed vs Bosch's 2,000-3,000 rpm common range
✓Fein includes QuickIN modular system for rapid accessory swaps

Disadvantages

✗Bosch models may offer higher raw torque (e.g., GSB18V-1330C at 1,330 in/lb)
✗Bosch often provides 2-speed options which may be simpler for some users

Choose Fein for lightweight agility and metalworking versatility; choose Bosch for higher raw torque or simpler 2-speed operation.

vs. Milwaukee 18V 4-speed drills

Advantages

✓Fein is lighter at 2.87 lbs compared to Milwaukee's typical 3.5-4.5 lbs
✓Fein offers 4,000 rpm max speed vs Milwaukee's 2,000-3,000 rpm common range
✓Fein includes QuickIN modular system for rapid accessory swaps

Disadvantages

✗Milwaukee may offer comparable AMPShare battery ecosystem integration
✗Milwaukee often provides 2-speed options which may be simpler for some users

Choose Fein for lightweight agility and metalworking versatility; choose Milwaukee for broader ecosystem compatibility or simpler 2-speed operation.

Chuck System

QuickIN Clamping Force1,062 in/lb clamping force for secure attachment retention

Safety

Kickback MonitoringElectronic kickback stop to prevent tool rotation during binding

Dimensions & Weight

Height9.92 inches

Width3.11 Inches

Depth8.54 inches

Weight2.87 Pounds

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