Seachoice 11641 3 Position Heavy Duty Ignition Starter Switch

3 Position: Off - Ignition - Start. 15A @ 12V DC. Chrome plated brass face nut and brass back-up nut.. Supplied with two keys. Stainless steel springs. 11621: Mounting stem 1-7/32"L, 13/16" - 24 thread dia. 11641: Mounting stem 1-7/16"L, 13/16" - 20 thread dia. Overall Dimensions: 3-1/4"L; 1-7/16