Impact screwdriver for loosening and unscrewing secured or very tightly sitting screws, nuts and bolts. Transforms hammer kinetic energy into screw driving moment. Mechanism based on precision worm gear made from very long thread pitch. Practical plastic handle protecting the hand from injury while hammering.
Set includes 6 bits forged from CrV1650 chromium vanadium steel and tip adapter from 1/2" square to 5/16" hexagon. Very useful tool in refurbishment companies, mechanical and car servicing stations.
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