Sturdy steel structure, durable wire rope, it can be used with the standard discus, a special efficient trainer for developing wrist and forearm strength. Features with easily adjustable strength, anti-slip foam handle, robust nylon rope and Black coated parts for intensive exercise training. Package includes: 1 x Forearm Trainer Strengthener and one loading Pin. chillax Wrist Roller has on line connected with stainless Carbiner. The barbell is not included. Need to purchase the barbell plate separately. 2 inch barbell plate is acceptable. Weight plates are not includes in this product. It is durable and made with the finest material such as stainless bar handles & Paracord nylon line. First Wrist and forearm Roller on the market that has knurled handles. This improvement will increase your grip, prevent any slips that might cause by your sweat. Can be used with Olympic weight plates, kettlebells, fat grip and more to perform wrist curls, wrist extensions for flexor muscles. Add more variations & have fun doing different exercises to target multiple muscles.