4 PCS MAGNETIC BIT HOLDER SET 60 75 100 150MM EXTENSION BARS CRV 1/4" HEX SHANK
Material: Carbon Steel + CRV. Shank shape: Hex shank. The screwdriver head has strong magnetic so that it can self-lock the connecting rod. It can join electric screwdriver, screwdriver, screwdriver nozzle, screwdriver head.