Using high-precision cutting technology, the threads are very precise, clean and sharp, and the deep and clear threads can easily penetrate wood and plastic, ensuring a firm fixation and not easy to deform and slide during use. Masteelf 50pcs Left Hand Threaded Screw For Drill Chuck Shank Adapter Steel Fixing Screw Electric Drill Flat Head Cap Screw Bolts Replacement 5x22mm Dcf14435 32e9 4a79 Af72 950a677d4de1.fc51ba477a966de337e603977035fc9f UNF Drill Chuck Replacement Screws Hex Shank Drill Adapter M14 Screw Thread For Electric Drill Polishing M6x25mm Chuck Adapter Screws Left-hand thread screws for UNF drill chuck shank adapters. Using high-precision cutting technology, the threads are very precise, clean and sharp, and the deep and clear threads can easily penetrate wood and plastic, ensuring a firm fixation and not easy to deform and slide during use Left-hand thread screws for UNF drill chuck shank adapters. The left screws of the drill chuck are made of carbon steel, which feature is strength and offers good corrosion resistance in bad environments such as high temperature, cold and high humidity areas Item Specifications Material:Carbon Steel Size:M6x25mm Colour:Black Package 5pcs M6x25mm Drill Chuck Left-hand Screws