Precision Brand Shielded / Lined Hose Clamps provides maximum protection for all soft hoses. At the same time, they ensure a strong, positive seal. Every Shielded / Lined Hose Clamp’s band, liner, and housing are made from stainless steel. It also comes with a plated 5/16″ slotted hex head screw. Shielded /Lined Hose Clamps have an inner liner that covers band serrations which prevents hose damage.