Bionic Bigfoot Stopper Bionic Bigfoot toestop is our premier derby stopper for all playing positions. Bigfoot is shaped for optimum grip and control. Materials/compounds are formulated for extreme grip and longevity. #1 in Grip • Absolute best stopper on slick cement. • Great for all surfaces (due to the grip characteristics of this compound, wear will take place faster on grippy surfaces). • Footprint 59mm • Long lasting: The proprietary compound has proven to outlast the competition up to 10 X longer (with the grip model). • Pre-angled eliminates break-in, provides maximum contact to the skating surface which gives absolute best grip, stability and control. • Angles cut on backside eliminates any chance of wheels rubbing, causing major drag/friction. This holds true for wheels. • Up to 70mm in diameter. You can have your trucks at your desired tension without worrying about wheels rubbing on your stopper. • 5/8" X 30mm shank, American Standard Thread (industry standard). Accommodates all plate models with 5/8" AST. • Thin/low profile for more rebound/energy return and allows you the option of having more clearance between the stopper and floor. • Non-marking