Precision Keyless Drill Chucks Designed for toolroom and production machinery where accuracy, gripping power and the keyless features are desired. For precision production line use. Easily closed by hand Does not slip TIR: 0.004" Wrench is not supplied Compatible spanner wrench size: APU13/16 Item Capacity Jacobs Taper Accuracy 0222-0870 1/64-1/4" 1JT 0.0048" 0222-0872 1/32-3/8" 2JT 0.0048" 0222-0874 1/32-3/8" 33JT 0.0048" 0222-0876 1/32-1/2" 6JT 0.0048" 0222-0878 1/32-1/2" 33JT 0.0048" 0222-0879 1/32-5/8" 3JT 0.0048" 0222-0880 1/32-5/8" 6JT 0.0048" 0222-0884 1/32"-3/4" 3JT 0.0048"