[Antislip Design] of the barbell enhances the friction with the ground. It is nonslip, stable and does not hurt the floor. [ for Barbell]The barbell ball is made of high quality silicone, flexible and enough to hold the weight of a barbell. Helps you do more total body strength training. [Fits 2 Inch Bar]Barbell base fits 2 inch diameter steel pipe. Installation is very simple without fixing screws and bolts. [Full 360 Degree Swivel]Full range swivel up and down for variety of exercises. Great for total core workout: traps, biceps, back, shoulders, abs, hamstrings, and much more. [Great for Strength Training]Acting on angled barbell facilitates movements that are simply impossible with a traditional barbell or dumbbell. can increase the difficulty of many exercises such as Deadlifts, Squats and Single Arm Rows, Presses. Colour:black Material:Silicone Package Contents: 1 * Barbell Cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.