For lathes with 15" - 18" swing. Only a second to change tools. Rugged - No chatter or vibration. No time wasted with shims.Safe and simple to operate. Speed your lathe operations up to 90%. For fine precision work to heavy-duty cutting. Tool Post Overall Dimensions: 6" x 4-1/8" x 2-1/2 high. Comes exactly as shown in pictures.