Zorpia&reg; 6 pc Stainless Steel O Shape Shackle + 4 Holes Adjuster for Survival Bracelets with Cosmos Fastening Strap - stainless steel adjustable shackle with 4 holes for paracord bracelets Stainless steel shackle can bear 150 - 200 kg; used for camping, hiking and other outdoor sports Adjustable buckle connection. Diameter of each hole: 3/16" Diameter of the adjusting bar: 3/4" Package included 6 pcs O Shape shackles