Fits Quadlines with a 5/16" toe stop threading (won't work for 5/8")
2 QuadStop brake bolts / the hardware for QuadStops FRONT toe stops. Does NOT fit QuadStop Rear stop assembly. The brake system with superior grip and angle to the ground than any other toe-stop used for roller skates with large wheels. ENDORSED by Richard Humphrey!

We got creative and found that you can use 2 Sure-Grip Bullseye stops back to back using the QuadStop Bolt.