The KR Strikeforce SP-10 is a grey felt slide pad that is available for right or left hand bowlers. The SP-10 pad allows the most amount of slide when compared to the other slide pads available from KR. These pads may need to be trimmed to fit your size shoe. They are also compatible with any brand of interchangeable bowling shoe.
I've been a confirmed SP8 person for years, putting up with a bit of slide resistance, since I originally had tested the 'teflon' slide pads years ago when they first came out and promptly took a fall. These gray felt pads are great, and I don't have any trust issues with them. Combined with the black leather heel, I'm good to go. In fact I'm here on this site because I'm going to order two more of these #10 pads.