Features 1、This is a set of split bushing converters for multiple purposes of chuck or collet sutability 2、Adopted high quality springsteels material, it is of good flexibility and wear resistance 3、High precision, tight and stable clamping offer much convenience of workings 4、Comes with 9 pieces of various sizes of adapters, so they are applicable to different Specifications of the bit tool and chuck 5、Suitable for engraving machine, wood router. A perfect woodworking tool Features: This is a set of split bushing converters for multiple purposes of chuck or collet sutability. Adopted high quality springsteels material, it is of good flexibility and wear resistance. High precision, tight and stable clamping offer much convenience of workings. Comes with 9 pieces of various sizes of adapters, so they are applicable to different Specifications of the bit tool and chuck. Suitable for engraving machine, wood router. A perfect woodworking tool. Specifications: Condition: 100% Brand New Material: Springsteels Outer Diam. - Inner Diam.: 12.7-6.35mm, 12.7-6mm, 12-6mm, 12-8mm, 12-10mm, 10-8mm, 9.5-6.35mm, 8-6mm, 8-6.35mm Weight: Approx. 90g Package Included: 9 * Chuck Collet Adapters Package List