Stainless steel hose clamp provides maximum corrosion resistance to salt and most chemicals.Package includes: 20 pieces 3/8"-5/8" hose clampsAdjustable style hose clamp for a variety of applications for marine, auto, water pipes, fuel lines, etc..Use a screwdriver to tighten or loosen the screw of hose clips then adjust the size, Secures pipe clamp tightly in place.Excellent Service: If you have any question about this Hose Clamps, please feel free to contact us and we will answer your questions. Looking forward to your next purchase.