[Premium Material]Engraving machine aluminum clamper, cast aluminum material, not easy slide wire, beautiful and durable.[Surface]All-sandblasting process, Seismic capability, long service life.[Exterior Design]Unique slot design, easy to lock, high - precision, and easy to remove with non- teeth.[High Quality]High hardness, good elasticity, and not easy to deform.[Applicable]Normally used to replace the spindle fixture of the spindle of a 400w 500w ER11 ER16 600w brushless spindle motor for CNC engraving machine.size:55mmMaterial:aluminumcolour:SilverPackage Contents:1 * spindle mountOnly the above package content, other products are not included.Note: Light 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.