BAZHOU Cycling Front Wheel Riser Block, Stablize Bike Trainer Front Wheel Stand Plastic Turbo Trainer Front Wheel Support for Indoor Bicycle Training, Stationary, Riding Accessories Stable Bike Trainer Stand: This bike riser block keeps your bicycle's front tire in place and raises the front just enough that you will not be sliding off your seat while pedaling. Keeps the bike steady, relaxes your arm and corrects the riding posture for better cycling training. its suitable for long-term cycling exercise. Perfect Design: If you do your biking training with your bike being slightly unparalleled to the gro, it would cause hand fatigue. This item is designed for better indoor cycling training, it rises the front wheel to keep bike parallel to the floor and straight for stable and safe cycling. Ideal Bike Accessory: Double grooved design fits your narrow or wide ties. The groove fits most sizes of bikes, road bikes, mountain bikes. This is ideal for indoor bicycle training. Durable: Made of plastic, it's durable and lightweight. Anti-slipping design, keeps you secure. With pads on the bottom, the wheel riser can protect you form slipping and your floor from damage at the same time. Colour: Black Size with packaging: 23*12*6cm Quantity: 1pc Kind tips: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind erstanding. 3. Only the above package contents, excluding other products.