1. The series of chucks are of the short cone type and be directly connected to the spindle noses of the machine tools.

2. The chuck mounting types are classified as type A1、A2、C and D which can be separately fitted onto No.3、4、5、6、8、11、15 spindle noses. The connecting dimensions conform to GB5900.1-GB5900.3(ISO702)standards. The same with K11 series 3-jaw self-centring chucks, K11□/□ are classified as solid jaws, two-piece jaws for Form A and Form C jaws can be interchanged for chucks of the same size and the same size and the same jaws’ s Form.