TJ Longda 50 Pieces Stainless Single Ear Hose Clamps size 19/32" or 15.3mm 1. Made of Stainless Steel Band UNS S30400. 2. To use in the industries like automotive, food and beverage, and so forth. 3. Precise tongue-in-groove seamless design. 4. Smooth inner circumference for 360 degree uniform seal. 5. Not for Pex Plumbing.