Sure-Grip Shock Stop Roller Skate Toe Stops The Shock Stop is Sure-Grip's high performance roller skate toe stops. Featuring a large round flat surface for extra stability and control. Surface holes give extra bounce for jumping and quick starts while the hollow stems keep it light.Featuring an exciting formula, the Shock Stop is extremely durable, lightweight and long lasting even outdoors. Sold as a pair. Use: Indoor, Rink, Roller Derby, OutdoorFeatures: Made in the USA Dimensions: 55mm across, 26mm stop thickness Stem length: 25mm US thread Highly durable new rubber compound Flat large round surface gives skaters stability when up on their stops Grips extremely well on all surfaces Tested and approved by skaters Imperial thread The imperial thread suits most roller derby skates/popular plates (Sure-Grip, Powerdyne, Pilot, Chuffed, Lolly etc) but if in doubt please ask us before purchasing. Brand: Sure-Grip