Don't be fooled by cheap imitations. This is the well-known Conquer brand that will outlast the competition and will stay in one piece for many years to come. Others are not cast well and easily crack/break/fracture under stress, particularly when pushing hard during that marathon ride when you come off the seat to give it your all! Elevate your cycling experience with the Conquer Indoor Bicycle Trainer Front Wheel Riser Block. Designed for use with indoor and outdoor cycling, this black riser block is made of durable ABS plastic and comes with anti-slip foam rubber feet to ensure stability during your workout. Measuring at 8.7 x 4.5 x 2.3 inches, this medium-sized block is perfect for cyclists who need stability and balance while training. The Conquer Indoor Bicycle Trainer Front Wheel Riser Block is suitable for cycling and training enthusiasts who want to improve their performance. This item has a weight of 6.1 oz., or 174 grams, making it lightweight and easy to carry. Compatible with trainers and rollers, this riser block is a must-have accessory for any cyclist. Ships lightning-fast tomorrow as long as tomorrow is not a Sunday.