1、Rise the front wheel and keep bike steady and straight for better cycle training. 2、Pads on the bottom protect your floor form damage during training. 3、Anti-slipping design, keeps you secure. 4、Plastic made wheel riser, durable and lightweight. 5、Fits most sizes of bikes. Features: Rise the front wheel and keep bike steady and straight for better cycle training. Pads on the bottom protect your floor form damage during training. Anti-slipping design,  keeps you secure. Plastic made wheel riser, durable and lightweight. Fits most sizes of bikes. Specification: Material: plastic Color: as picture shown Size: approx. 22*22*7cm/8.7*8.7*2.8inch Weight: approx. 222g Package list: 1 x Bike Front Wheel Block