Rubberized urethane with granular like non-slip surface. Available in sizes 7/8", 1", and 1-1/8" ID. The grips do not have a hole in the top for a switch.
I agree with Pat F. I used a 1 wood boring bit on my hand held drill to CAREFULLY open up a hole on the closed end. Now my RV-12 flap handle is much more better looking!
Pat F
24.09.2017
Open the closed end (carefully) and it works perfect for the RV-12 flap handle.