Consistent manufacturing ensures consistent performance when changing blades The technology enables you to pre-sharpen and store extra QuikBlade runners in your hockey bag for a quick change, any time Interchangeable runners allow you to quickly adjust to different ice conditions and styles of play, giving you the ability to always skate at peak performance Holder not included. This is for a runner set. Runner Length Boot Size Range 254 mm 6 and 6 1/2 263 mm 7 and 7 1/2 272 mm 8 and 8 1/2 280 mm 8 1/2, 9 and 9 1/2 288 mm 10 and 10 1/2 296 mm 11 and 11 1/2 306 mm 12 and 12 1/2