Shop / Hoist Parts / Challenger 30mm Knob “Buttonhead Screw 10×16” has been added to your cart. View cart Challenger 30mm Knob$4.03 In stock Challenger 30mm Knob quantity Add to cart SKU: TH-3W-01-22 Category: Hoist Parts Related products Emergency Push Botton $27.00 Add to cart Rotary 6-1/2″ Bronze & TFE Bearing Ring $201.44 Add to cart Overhead Hose 278″ $319.88 Add to cart Challenger 8-1/2″ Wiper $262.71 Add to cart