while hole edges increase grip

This perfect interface with the axle

With maximum kicktail

or hardware

Rollerblade RIVAL 12" FRAME 4X100 (1PR) Orangatang while hole edges increase gripThe Rival 4x100 Frame gives speed skaters the ultimate performance. The 12 305mm 7000 extruded aluminum frame provides torsional rigidity and stability. It allows great acceleration with its speed inspired design and wheel base and has 165 & 195mm mounting points. Included: (2) 12 extruded aluminum frames, (8) racing axles, (4) boot screws and a 4mm Allen Key. FEATURES: MADE FOR SPEED 4x100 Quicker acceleration for speed elite skaters needing a medal