FIRSTINFO Precision Certified Torque Limiting Screwdriver, 1/4 Inch Universal Hex Bit Holder Quick Release Design, 2-12 in-lbs

**Press the locking knob when adjusting the torque; release the locking knob when reaching the setting torque value.

Specifications:
1. Torque limiting screwdrivers feature aluminum scale and tube to reduce weight and enhance durability.
2. This torque screwdriver has three features when tightening fasteners: smooth, accurate, and consistent effects. When the torque achieves its maximum, the mechanism will automatically slip to prevent over-tightening.
3. All models have an easy-release bit holder which securely retains bits or sockets during the operation.
4. Clearly laser scale; each torque screwdriver with laser serial no. which can be traced easily.
5. Spring-loaded locking collar locks the scale when the torque is setting.
6. All torque screwdrivers are made of the best materials which can reach the exacting tolerance.
*MATERIALS
Bit holder:S45C
Hexagon Knob: Anodic treatment
Graduated ring & tube:aluminum
Grip: TPR
*MATERIALS
Bit holder:electroplating
Hexagon Knob: Anodic treatment (yellow)
Graduated ring & tube:Anodic treatment (black)
*HEATREATMENT
Bit holder:HRB 90~94
Hexagon Knob: HRB 25~30