Selection of metal material, . High precision, high hardness. Compact, easy to operate. Easy and highly efficient. Application:Widely used in homemade lathe woodworking lathe beads. Length:140mm Center height:31mm Diameter of shaft:20mm Distance between holes:45mm Size of hole:6.6mm Maximum extension distance:40mm Clamping range:0.6-6mm Note:Please note that this center is not revolving. Colour:Silver Material:Aluminum Alloy + Steel Package Contents: 1 * Buddha beads machine lathe 2 * wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.