10mm triangular shaft and 6mm round shaft which can applied to electric drills for your different work requirements. This adapter turns your electric drill from a simple punching tool into a multi-functional grinding machine tool. Easy to use, just insert the conversion shaft into the chuck, then tighten the black and silver pressure plate with wrench. Perfect drill to grinder conversion kit for surface sanding, wood cutting, jade grinding, furniture polishing, metal rust removing, . Made of good hard metal, high-temperature resistance, sturdy and durable, wear resistance. Please Note:Please take protective measures use. Please make the pressure plate is not loose to prevent cutting pieces from out. Material:Metal colour:silver+gold Package Contents: 1 * 6mm Round Shaft 1 * 10mm Triangular Shaft 3 Set * Grinder Flange Nuts 2 * Grinder Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.