Ball Pull Up Handles & Chin Up Bar Hook RAGING BOAR BALLS 4" ROUND SURE GRIP BOAR BALLS made of Powder Coated Steel. PATENTED NEVER DROPHOOKS fit pull up bars to 1 3/4" round! PREMIUM NYLON WEBBING and Super strong stitching! PENNSYLVANIA USA Designed And Assembled PRIORITY SHIPPED 2-3 Day Delivery to your door!