The Rollerblade Fusion X5 frame is a solid aluminum frame with big wheels and fast bearings that can fit on to any aggressive skate. This is what every aggressive skater needs. Don't hesitate, get yourself a pair and you will feel like a little kid again, fun times guaranteed. The complete set of frames is sold with all the necessary hardware to fit your aggressive skates. Features: 8 80MM / 80A Rollerblade wheels. 16 SG 9 bearings. Sizing: Small - fits boot size 6-10.5 Large - fits boots size 11-15