[Increase stability] Create a horizontal training position by raising the front wheels to align with the rear wheels. Increase the stability of the front end and help balance. [Used for indoor bicycle training] This bicycle front wheel lifter is specially designed for fixing the front wheels of indoor bicycle training platforms. It can raise your front wheel, making your riding posture more natural. [Durable and wear-resistant] Provide stability and keep the handlebar straight. The center groove is used for road bikes, and the outer groove is used for mountain bike wheels. [Slip resistance] The bicycle wheel seat tube is made of high-quality and high-strength plastic material, which is strong and durable, not easy to break, non-slip safety, and long service life. Product Specipication: high quality. The front wheel frame of this bicycle is made of plastic material, which is sturdy and durable, light in weight, and suitable for long-term use. must use. All you need to do is to raise the front wheel to keep the bike steady and straight for better cycling training. Protect your floor. These cushions at the bottom can protect your floor from damage during exercise. Specification: Material: Plastic material Colour: Black. Dimensions: 22.8 x 11.8 x 5.7 cm/8.97 x 4.46 x 2.24 inches. Weight: about 165 grams. Package includes: 1 x Rim block.