Mishimoto MMCLAMP-35 Stainless Steel T-Bolt Clamp Stainless steel construction resists corrosion Locking nut keeps clamp from loosening More durable than traditional worm clamps Polished finish increases engine bay aesthetics Mishimoto Lifetime Warranty Material: Stainless steel Actual clamping ability: 3.38 inches to 3.7 inches Actual clamping ability: 86 millimeter - 94 millimeter