Click or scroll to zoom Tap or pinch to zoom TronX TRON Giga Hz Outdoor Roller Hockey Wheels by HockeyGear.Com $1.99 76MM - $1.99 68MM - $1.99 80MM - $1.99 76MM 68MM 80MM Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Slot Core Technology increases rebound and overall grip. Test Proven Urethane. Sticky-wicky ingredient for superior grip. Euromax ingredient for better wear. 84A