Overview Reviews Product Description Shifter Knob - Quicksilver - 1/2-20, 3/8-24, 3/8-16 and 5/16-18 in Thread - B&M Logo - Aluminum - Brushed - Universal - Each Product Videos Custom Field Product Reviews Write a Review Write a Review × B&M Billet Alum. Quicksilver Knob Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *