1-7/8 Throttle Knob - Red Grooves316 Cast Stainless Steel1-7/8 Throttle Control Knobs Fit Hynautic D-Dec/Sturdy Controls Throttle Knobs are colored for Sight and Grooved for Feel - Meets ABYC Specifications
Schmitt & Ongaro Throttle Knob - 1-? - Red Grooves