1. The chucks have two mounting types;the short cyindrical center mounting and the thread mounting. 2. The compact chucks are small volume,easy to be used and enjoy a high centring precision as well as a large clamping range. 3. The chucks are made for meter machine tools in the processing of non-ferous metals,non-matals like plastics and so on 4. Mainly used for machine tools in the processing of non-ferrous metals and non-metals. Name:Lathe Chuck Model:K01-50 Number of Jaws:3 Use for All Type DIY Mini Lathe Machine Colour:Silver Material:Metal Package Contents: 1 * Mini Lathe Chuck 2 * Screw Only the above package content, other products are not included. Note: Light reflection 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.