Features: 

• Wonderful replacement for your broken one with this Star Knob. 
• Screw on type design for easy install and with surface nice finish for comfortable grip.
• Specification:
• Product Name: Clamping Copper Core Knob
• Material: Metal, Plastic
• Color: Black, Golden

Thread Hole Inner Dia Star Head Diameter Total Height 

• M4 25mm 20mm
• M5 25mm 20mm
• M6 25mm 20mm
• M8 32mm 23mm
• Package Include:  

1 x Knob