This listing is per twoliner style hose clamps.
Lined hose clamps are used when the hose or tubing has a soft outside. The internal liner keeps the serrations from biting into the hose and damaging or destroying the hoses outer jacketing.
1/2" 300 Series Stainless SteelBand
300 Series Stainless Screw
Made to SAE J1508 MX (Carbon steel screw)
9432H (Stainless screw)
Ideal:
53320(Carbon steel screw)
615-032(Stainless screw)