Name: WORX WU139.9 12V 50Nm Brushless Cordless Drill Driver (Bare Tool)
Brand: Worx
SKU: WORX-WU1399
Price: 340 HKD
Availability: InStock

The WORX WU139.9 is a brushless cordless drill driver on the WORX 12V lithium platform, supplied as a bare tool. At roughly 144mm long and 0.66kg bare, it still delivers up to 50Nm of torque, making it well suited to assembly and maintenance work in ceilings, cabinets, server racks and other confined spaces. The brushless motor drives a compact gearbox with a two-speed selector for 0-500 / 0-1800 rpm no-load speed, and an 18+1 position clutch (including a drilling position) covers everything from timber drilling to delicate fastening. SMART CLUTCH disengages and stops the tool the instant the selected torque is reached, preventing cam-out and marred workpiece surfaces, while the spindle lock lets the tool be used as a manual screwdriver. The single-hand quick-change hex chuck allows fast bit changes. This is the bare tool version: battery and charger are NOT included, making it ideal as an add-on or spare for users who already own WORX 12V batteries.

Features & Benefits

SMART CLUTCH - stops the moment it is tight

The clutch disengages and the motor stops as soon as the selected torque setting is reached, reducing cam-out, stripped screw heads and damage to visible surfaces. A short chuck, compact gearbox and short-stack motor keep overall body length down to about 144mm.

18+1 torque settings, two speeds, one-hand bit change

Eighteen torque positions plus a drilling position let you match the setting to the fastener and material. The two-speed gearbox with a variable-speed trigger gives 0-500 rpm for starting and precision fastening and 0-1800 rpm for continuous drilling. The quick-change hex chuck accepts bits one-handed, and the spindle lock allows manual driving when the battery runs flat.

Brushless motor: higher efficiency, lower heat, longer life and around 20% less noise than a brushed equivalent.
50Nm maximum torque for drilling and fastening in timber, board and general metal work.
About 144mm long and 0.66kg bare - easy in tight spaces and over long one-handed sessions.
Battery level indicator and forward/reverse selector.
Shares the WORX 12V lithium platform - batteries and chargers interchange across the range.

Specifications

Model	WU139.9
Product type	12V cordless brushless drill driver
Battery platform	WORX 12V lithium
Rated voltage	12V
Motor	Brushless
Max torque	50 N·m
Torque settings	18+1 (including drill mode)
No-load speed	0-500 / 0-1800 rpm (two speeds, variable)
Chuck	Quick-change hex chuck (one-handed)
Max drilling capacity	Wood 30mm / Steel 10mm
Body length	Approx. 144mm
Short axis length	114mm
Bare tool weight	0.66kg
Other features	SMART CLUTCH auto-stop, spindle lock, forward/reverse, battery level indicator
Configuration	Bare tool (battery and charger not included)

What's in the Box

WORX WU139.9 12V brushless drill driver - bare tool x1
Battery and charger NOT included (bare tool)

The official WU139.9 configuration chart also shows a screwdriver bit x1 and a belt hook x1 supplied with the tool (actual contents may vary).

The 12V battery shown in the product photography is for illustration and scale only and is NOT included with this bare-tool model.

No downloads available yet

Contact the supplier if you need a datasheet, certificate, or another technical document.

Reviews & Q&A

No reviews yet. Be the first to review this product.

Features & Benefits

SMART CLUTCH - stops the moment it is tight

18+1 torque settings, two speeds, one-hand bit change

Brushless motor: higher efficiency, lower heat, longer life and around 20% less noise than a brushed equivalent.
50Nm maximum torque for drilling and fastening in timber, board and general metal work.
About 144mm long and 0.66kg bare - easy in tight spaces and over long one-handed sessions.
Battery level indicator and forward/reverse selector.
Shares the WORX 12V lithium platform - batteries and chargers interchange across the range.

Specifications

Model	WU139.9
Product type	12V cordless brushless drill driver
Battery platform	WORX 12V lithium
Rated voltage	12V
Motor	Brushless
Max torque	50 N·m
Torque settings	18+1 (including drill mode)
No-load speed	0-500 / 0-1800 rpm (two speeds, variable)
Chuck	Quick-change hex chuck (one-handed)
Max drilling capacity	Wood 30mm / Steel 10mm
Body length	Approx. 144mm
Short axis length	114mm
Bare tool weight	0.66kg
Other features	SMART CLUTCH auto-stop, spindle lock, forward/reverse, battery level indicator
Configuration	Bare tool (battery and charger not included)

What's in the Box

WORX WU139.9 12V brushless drill driver - bare tool x1
Battery and charger NOT included (bare tool)

The official WU139.9 configuration chart also shows a screwdriver bit x1 and a belt hook x1 supplied with the tool (actual contents may vary).

The 12V battery shown in the product photography is for illustration and scale only and is NOT included with this bare-tool model.

Reviews & Q&A

No reviews yet. Be the first to review this product.

JACO自營旗艦店

WORX WU139.9 12V 50Nm Brushless Cordless Drill Driver (Bare Tool)

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