Grind To A Halt, Inc. GrinderMinder™ - Skateboard and Bike Deterrant Download View 3D Files Company Resources Back to top Brochures Photo Gallery Order Samples Link Product Pricing Installation Procedures Skateboard and Bike Deter… Threaded Grindminder™ Ska… Round HandrailMinder™ Ska… Flat HandrailMinder™ Skat…