Product Introduction: Double dead fly teeth Including retainer rings, tire pads. The track wheel most commonly used for training and competition. Weight: Front wheel: 970g Rear wheel: 1145 grams Rim: Color: Black Height: 50 mm Material: 6106 aluminum Color: Black Number of holes: first 20 and then 24 Material: Stainless steel Joint: Brass, ABS Shape: Straight pull, blade Flower Drum: Color: Black Fixed gear 1.37 × 24 TPI Front and rear axle material: steel Front and rear flower drum: Aluminum Compatibility: Recommended tire size: 19 to 28 mm Tires: Open tires