Mr. Chain Heavy Duty Plastic Stanchion Post, 41inH, Black/Yellow Stripe, 4 Pack, Gec, Mfr#: 99929 -4

Warning posts come with base, ball top and c-hooks for chain placement. Posts measure 41h x 3 diameter. Base is hollow, but can be filled with sand, gravel or water for added weight and stability. Sold 4 per case.