BMX Bike Pegs Resilient Aluminum Alloy for Stunts Tricks and more Fits: Front and Rear Axles of Bikes Length: 7.0 cm (2.76") (may vary by 1 mm) Outer Diameter: 2.3 cm (0.90") (may vary by 1 mm) Inner Diameter: 0.9 cm (0.35") (may vary by 1 mm) Material: Aluminum Alloy