The adjustable Lever Arms create a space-efficient solution to developing upper body explosive strength.Fits 2.3″ x 2.3″ uprights with 5/8″ holes only. Regular 2″ collars will NOT fit. IMPORTANT: Our Lever Arms ONLY fit upright tubing dimensions of 2.3” x 2.3” (60mm x 60mm) with 5/8” holes — our standard Bells of Steel upright size.Please note the sleeves on the Lever Arms are made of steel tubing instead of traditional machined barbell sleeves. This means the sleeves are a few millimeters smaller than a typical barbell and regular 2″ collars will NOT fit correctly. However, our Grip Lock Collars are designed specifically to fit the steel tubing sleeves to keep your weights secured tightly. Specs Per Lever ArmWeight 11.3kg/25lbsTotal Length 287mm/11.3″Sleeve Diameter 48mm/1.9"Loadable Length 229mm/9″Sleeve Coating Black Powder CoatMax Capacity 200kg/440lbsShipping Box Dimensions 40" x 10" x 4"Warranty Limited Lifetime Warranty