2Pcs Heavy Duty Chuck Head - 16mm x B18
. Material : Carbon Steel
. Size : 16mm ( 5/8" )
. Taper Hole : B18
. Clamping Range : 0 - 16mm
. Weight : 883g
. 1 Pcs 16mm Chuck Key
. This is a heavy-duty, keyed drill chuck with a 3-jaw design, often used for industrial drilling or milling machines.