✅ A standard duty 1/2" keyed steel chuck ✅ 1/2"-20 UNF Mount ✅ Fits most major tool brands ✅ Fits portable and cordless drills ✅ Maximum capacity(in): 1/2" ✅ Minimum Capacity(in): 0.06" ✅ Mount: 1/2"-20UNF ✅ Runout(in): 0.013" ✅ Sleeve Diameter (in): 1.7"

Superior Electric J3513B. This high quality Keyed Drill Chuck is made of heavy duty steel with Key 1/2" - 20 UNF Mount. It fits almost every brand’s drill motor. Compatibility details are provided below.