Drawbar: M10 MT2 Shank Containing all ER20 collets Note: Please allow 1-3mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Color: Silver Material: Carbon Steel Size: Clamping Diameter: 1-13mm Lock Nut Outer Diameter: 28mm Package Contents: 1 * MT2 ER20 M10 Tool Holder 7 * ER Spring Collet Size(accuracy0.015): 4,5,6,7,8,1/4,1/8mm Only the above package content, other products are not included. Note: shooting Light shooting 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 +/- 1-3 cm.