The Trainer Bike Rollers by cfdzcp are designed for indoor use, featuring a metal construction in a sleek blue colour. This set includes rollers that are suitable for universal wheel sizes, making them ideal for adults and beginners looking to improve their cycling skills. The Antares model offers a foldable design for easy storage and portability, perfect for those looking to enhance their balance and overall cycling experience in the comfort of their own home. Made in the United Kingdom, these trainer bike rollers are a must-have accessory for cyclists seeking to improve their indoor training sessions. i do have more than 1 i have 5 can do a deal for all