This is a roller skates exercise Brake Stopper. This brake stopper is easy to use and convenient to install on most kinds of roller skates. It can be a great tool for those roller skates enthusiasts, and they will like it. It could be adjusted to the height you need for comfortable skating. Roller Skate Toe Stopper is made of , to use and for time of use. Features -Color:Black -Material:Rubber, Stainless Steel -Size:5.30X4.90X4.90cm/2.08X1.93X1.93in -These Skate Toe Plugs are made of high class rubber, stainless steel. You can use them on most standard four-wheel skates. The brake height can be adjusted freely according to the sliding needs. -Ergonomic design, skate toe plugs provide stability and predictable braking force. It's more abrasive and won't drag or slide unintentionally. -The stopper combines rubber with stainless steel. You can easily install them without any tools. -The stopper is ideal for rounded outdoor surfaces such as streets and sidewalks. They have a large braking area to slow you down and make sure you can coast safely. -Suitable for indoor and outdoor use on most floors, such as wood floors for skating, asphalt floors and concrete floors. Package list: 1 x Pair of Toe Stops