5x Stainless Steel Premium 304 T-Bolt Turbo Silicone Hose Clamp 5.0"-5.31". Heavy Duty Premium 304 Stainless Steel T-Bolt Hose Clamps. These premium, heavy duty T-Bolt Hose Clamps have been designed tough and made from the highest quality materials. We use the finest premium quality 304 stainless steel that is super strong and rust resistant. Clamps work great for many applications (for either industrial or home use) such as commercial, automotive, air intake systems, duct systems and coolant systems. Product is backed by a no-hassle One Year Guarantee against defects. Set includes: Complete set includes FIVE new, never used premium stainless steel T-bolt hose clamps (including galvanized steel bolt and nut hardware). Clamp Diameter (inner diameter): 127mm - 135mm (5.0"-5.31"). Band Width: 19mm (3/4"). Thickness: 0.8mm material thickness. Strong, rust and weather resistant premium 304 stainless steel (compare to others selling cheaper grade 201 or 301 steel). Durable and tough, ready to handle tough environments and heavy duty applications. One Year Guarantee against workmanship and defects.