General description Replacement for your broken one with Star Knob. This product features a screw-in type for easy installation and is designed with nice workmanship for a comfortable grip. It is widely used in mechanical equipment, instruments and apparatus, as well as in the food and pharmaceutical industry equipment. Technical specifications Head Diameter: 50mm / 2 inches Thread Diameter: 10mm / 0.3 inches Total Length: 28mm / 1.1 inches Weight: 520g Color: Silver Tone, Black Material: Metal, Plastic Package contents 10 x Clamping Knob Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing. The measurement allowed error is +/- 1-3 cm.