Strong & Durable: The high-quality materials show their high durability. Stable Performance: The product has a stable performance due to unique precision and quality. Practical: It can help you make better, more efficient and more durable processing products.The chuck Can be converted into 6 handles, 6.35 handles and 8 handles It's split bushing converters for multiple purposes of chuck or collet sutability. Processing by heat treatment and precise grinding, durable to use. Used for chuck conversion of trimming, engraving machines. Suitable for engraving machine, wood router.Collet Chuck Adapter only,perfect woodworking tool. Colour:As shown Material:metal Package Contents: 1 x 0.24 inch / 6 mm Collet Chuck Adapter (with nut) 1 x 0.25 inch / 6.35 mm Collet Chuck Adapter (with nut) 1 x 0.32 inch / 8 mm Collet Chuck Adapter (with nut) Only the above package content, other products 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.