Ader Chrome Plated Hollow Bar w/ Collars 1''x51'' Bars are 1" x 51" hollow bars with 1" spring collars Lightweight for club pump set Fabricated w/ thick gauge steel tube & chrome plated w/ knurling 1" quick collar w/ rubber pad for the easy loading/unloading of 1"-1.125" hole weight plates. NO shipping to Alaska, Hawaii,PR, PO Boxes and APO/FPO addresses