Check the listing for details. Multi - Function 1.5-13Mm Self-Tighten Keyless Drill Chuck with 1/2-20UNF Mount,. Condition: New. Listed at 15.24 USD. Replacement drill chuck：A 1/2 - 20UNF, 1.5 - 13mm self - tighten keyless drill chuck made of high - quality alloy steel. It has strong clamping force, good wear resistance and stable performance. Self - tightening Ratchet Design：No chuck key needed. Ratchet sound prompts when tightening or loosening. Easy to operate and boosts work efficiency. Wide Compatibility：With 1/2 - 20UNF thread and 1.5 - 13mm clamping range, it fits most electric drills like Milwaukee, Dewalt, etc. Adaptable Shank Compatibility：Comes with a 3/8" to 1/2" adapter for seamless use with 3/8" SDS - Plus and 1/4" hex shanks. Convenient and practical：Easily convert your rotary hammer/impact wrench/impact Screwdriver into a drill rather than spending money having multiple.