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

Compatible with all OOZY front wheels

The wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life

Bearing style: Custom 6806 radial bearings filled with quality grease

AlpineStars Paragon Plus Youth Knee Pads - Youth S-M - Black Out of Stock If you don't mind takingLightweight, 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