Allparts 12-Gauge Shotgun Shell Knob Gold Replacement control knobs Gold 12 Gauge Shotgun Shell Knob, (Qty 1) Push-On, fits split shaft pots, 11/32" tall x 7/8" wide Gold 12 Gauge Shotgun Shell Knob, (Qty 1) Push-On, fits split shaft pots, 11/32" tall x 7/8" wide