Shop / Tire Changer Parts / Upper Disc Arm Lock Spring Bolt “1/4″ Valve” has been added to your cart. View cart Upper Disc Arm Lock Spring Bolt$12.00 Out of stock SKU: TH-ST0012044 Category: Tire Changer Parts Related products Onyx Inverter $1,027.00 Add to cart PCB Processor BD with Firmware $274.00 Add to cart Potentiometer Support Bracket $36.00 Add to cart Center BL Pad $65.43 Add to cart