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Wonderful replacement for your broken one with this Ball Knob.
Screw on type design for easy install and with surface nice finish for comfortable grip.
Specification:
Product Name:Clamping Copper Core Knob
Thread Hole Inner Diameter : M4/M5/M6/M8/M10/M12
Head Diameter: 16mm/20mm/25mm/30mm/35mm/40mm
Material: Metal, Plastic
Color: Black, Golden
Package Include: 1* Knob