Special steel blade. Chrome plated finishing. The hex keys are subjected to torque and hardness test to analyse their mechanical resistance and to ensure meet they specific standards. The L type hex keys have two arms of different lengths, and both ends can be used depending on the work beingdone. Using the longer arm you?ll have more torque, while using the shorter arm you'll have a quicker op...

Wear safety glasses, gloves and other safety equipment according to the job. Use the correct size of wrench for each bolt or nut. Do not close dimensions, metric for inches for example. Do not use pipes or other extensive bars to obtain more torque. Do not strike the wrench. Store in a clean and dry place.