Description: 1. Commodity name: wrist ball pull-up fitness equipment training ball pointing ball 2. Material: stainless steel rings + solid balls 3. Features: The grip ball is made of non-slip PU material and groove design. With stainless steel rings 4. Size: large ball diameter 9.7CM/3.82in (Please Choose Yellow) Small ball diameter 7.2CM/2.83in (Please Choose Black) Hanging strap total length about 26CM/10.24in Stainless steel hook total length about 9CM/3.54in The package includes: 2* Grip Ball 2* Lanyard 2* Stainless Steel Hook