The Roll-Line AMBRA HOCKEY BIG is the BEST and Most Popular HOCKEY Toe Stop in the World, Available for ALL Levels Quad Hockey Players . The AMBRA HOCKEY BIG Toe Stops have all of the GREAT characteristics needed in Toe Stops, Abrasion, Grip, and Resiliency, all 5 Star performance. The Roll-Line AMBRA HOCKEY BIG Natural Toe Stops are available in Metric (ONLY) Threads. All Roll-Line Frames have Metric Toe Stop Threads. ATLAS, Snyder, and Sure Grip use US Threads.