Product: FIRSTINFO Precision Certified Limiting/Limited Torque Screwdriver, 1/4 Inch Universal Hex Bit Holder, 10-90 in. lbs. with Extra T-Handle
Brand: FIRSTINFO TOOLS FIT YOUR NEEDS
Features: 
 
1. Torque Range: 10-90 in. lbs. 
2. Tolerance of Torque: ±6%. 
3. 1/4-inch (6.35mm) hex bit holder. 
4. Easy-to-read laser torque scale. 
5. Feature aluminum scale and tube to reduce weight and enhance durability. 
6. Slipping clutch mechanism to prevent over-tightening when reaching the pre-set torque. 
7. Ergonomic shape with non-slip and comfortable features. 
8. Each torque screwdriver with laser serial number which can be traced easily. 
9. Spring-loaded locking collar locks the scale when the torque is setting. 
10. All torque screwdrivers are made of the best materials which can reach the exacting tolerance. 
11. Quality meets DIN ISO 6789 & ASME B107.300-2010. 
 
Materials: 
 
* Bit Holder: S45C with electroplating 
* Hexagon Knob: anodic treatment 
* Graduated Ring and Tube: aluminum with anodic treatment 
* Grip: TPR 

💎EXTRA T-Handle For High Torque -- Use the included T-handle to attach the end of the torque screwdriver to get extra leverage on those high-torque applications.
💎Easily to Adjust -- Just press the locking knob when adjusting the torque; release the locking knob when reaching the setting torque value. Ergonomic shape with non-slip and comfortable features.
💎Automatically Slips Design to Prevent Over-Tightening -- Three features when tightening fasteners: smooth, accurate, and consistent effects. When the torque reaches the desired torque value, the cam mechanism automatically slips to prevent over-tightening.
💎Stronger and Durable Construction -- Spring-loaded locking collar locks the scale when the torque is setting. Made of best materials which can reach the exacting tolerance.

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