The ATOP wheel is an innovative fastening system that uses a wheel located on the shoe of the skates. This caster mechanism allows for quick and easy tightening while also providing even tension and stability. The ATOP system is known for its precision and ease of use. It is ideal for skaters who are looking for a system that can be quickly adjusted during or after a ride. This type of fastening is common in sports skates and models that require high performance and flexibility.