Features: These ball knob handles are made of high quality plastic for durability and long service life. The surface is well polished which can offer a comfortable grip feeling. There are total ten pieces of ball knob handles in one set that you can use for many machine tools. Two different colors and four different size that you can choose to meet your need. These ball knob handles are universal fit and can be used for all machine tools. Specifications: Color: Red, Black ( Optional ) Size: AM5x16, AM6*20, AM6*25, AM8*25 ( Optional ) Material: Plastic Type: Universal accessories Suitable Machine Tool: All Quantity: 10pcs Package Includes: 10 x Ball Knob Handles Note: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.