Mishimoto MMCLAMP-25 Stainless Steel T-Bolt Clamp, 2.5", Silver 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 Actual clamping ability: 2.60 inch to 2.91 inch Equipped with a self-locking nut Rust proof stainless steel