Specifications:

Band Width:  5/16"
Clamp ID Range:  1/2"-29/32" (13-23mm)
Band Materiel:  Type 301 Stainless Steel
Screw Materiel:  Zinc-Plated Steel
Quantity:  1 Clamp (Yes, these are sold INDIVIDUALLY!)
Suggested Use:  1/2" ID or 7/16" ID Tubing