Step Steel blades provide additional blade height for improved attack angle and extended blade life. The quality of steel from Step is beyond the standard manufacturer steel with an improved consistent blade profile already put on the blades automatically so they can be used right after being installed. This set of steel is coated with a special coating to help provide even better sharp life for your skates, the blades are also designed for the Tuuk Lightspeed Edge 3MM goalie holder for the new cowlingless goal skates. To make sure you get the proper blade size for your skates we advise you to double check the holder size on your skates or contact us to verify you get the right size for your skates.