We have used this product extensively and we highly recommend it for displaying bikes

Quicker lever access and light operation force maintains rider concentration

Large - 21

Compatible with all OOZY front wheels

If you don't mind taking 5 minutes to read the instructions or watch the installation video it's not too bad

AlpineStars Paragon Plus Youth Knee Pads - Youth S-M - Black Out of Stock We have used this productLightweight, durable, and flexible, the Paragon Plus will keep the knees of the young ones safe from gravel rash and some bigger impacts without being bulky and uncomfortable. Who's it for? Any kid wanting to make sure they don't have to pick bits of gravel out of their knees. Protection style? Firm, yet flexible guard for great impact protection, but with reasonably unrestricted movement. Materials? Elastic, mesh, and rip stop materials strategically