20 pcs bag Double Ears (2 Ear) Hose Clamps size 9/16" 1. Made of 101 steel, material no. 1.0338 / SAE 1008/1010, zinc-plated 2. 2-Ear design for increased clamping range. 3. For use on rubber hoses, plastic tubing, electrical cables, air hoses and other materials. 4. De-burred edges prevent damage to clamped parts. 5. Fast, simple and safe installation.