Drill Chuck Key, Type L-Type, Key Size 3/4 in, Pilot Size 1/2 in, Number of Keys 1, Handle Type L, For Use With 3/4 in Capacity Drills Chucks: Mfr. No. 48-66-2000, 48-66-2040, 48-66-2080, 48-66-2085, Key Holder Mfr. No. 48-66-4020