FIRSTINFO Precision Certified Torque Limiting Screwdriver Set, 1/4 Inch Universal Hex Bit Holder, 0.1-1.2 Nm / 1.33-10.18 in-lb with Double Scale

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About FIRSTINFO Precision Certified Torque Limiting

Contents: *Hex Screwdriver x 1 *20 Screw Driver Bits x 1 *Extension Magnetic Holder x 1 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