Product Show This is a professional speed skating shoes, the wheels are particularly large, the wheel diameter is 125 mm, very fast, recommended for speed skaters with basic. THE BOOT Carbon fiber Shoeshell;Handmade ;Laces and buckle double security protectionColor:BlackSize: US6~US13 THE FRAME CNC machined one-piece aluminum frame.Light weight and strength.Size: 3X125mmLength:12.4"Material：Aluminum alloy THE WHEEL This wheel can glide on different ground.-9 precision chrome steel quick-slip bearingsSize: 125mmHardness：85AMaterial：PU THE BUCKLE Micro-adjustable buckle,;Easy and quick to put on and take . In the inner material of speed skates chooses super fiber leather and memory sponge.Which fits closely to thee feet,protects the health of the user's feet in the learning process. CNC machined aluminum sole mounting parts.Ensure the level of the shoe sole.Mounting hole distance：195MM/ 7.677" Size reference： Professional shoe lasts;Pure hand-made carbon fiber shoe shell workshop；CNC machining aluminum alloy bracket workshop；The finished carbon fiber shoe shell is prepared for making professional speed skating shoes.