Zorpia&reg; 6 pc Stainless Steel D Shackle + 4 Holes Adjuster for Survival Bracelets with Cosmos Fastening Strap - stainless steel U shaped adjustable shackle with 4 holes for paracord bracelets Stainless steel shackle can bear 150 - 200 kg; used for camping, hiking and other outdoor sports D shackle fits for 1/2" webbing and strap Diameter of each hole: 3/16" Diameter of the adjusting bar: 3/4" Package included 6 pcs U shaped shackles