This part is a Black Smooth 3 5/8" Spa Diverter Cap and Handle Knob Kit only. 

This is a NON  Buttress style Cap if your cap has the word Buttress stamped in it look in our store for a Buttress cap. This Diverter Cap mounts on top of the Diverter Valve with the Stem sticking through.

The Diverter Valve that this part fits is used to Divert Water into different sides of a hot tub and fits many different brands.

The outside measurement of the Cap is about 3 5/8" the inside thread measurement is about 2 3/4" and the center hole where the stem measures about 3/4", Then the handle is about 4" long end to end and 2" wide side to side at thew widest part and the square hole in handle is 7/16" wide.

This Part is used in Many Brands of Hot Tubs With Black Colored Parts . 

This listing is for the Cap and Knob only all other parts shown are for illustration only and sold separately. We offer the Cap and Handle in different colors and shapes and the o-rings, Stem and Complete valves & Kits in our Store. 

NOTE: There are times that this kit will not solve the concern of the cap blowing off. If you replace the cap and it continues to blow off you will need to replace the entire valve. We do offer complete valve kits in our store.