Length: 2.9' Width: 1.97' Thickness: 0.78' Hole diameter: 0.45' Material: Rubber It could prevent muffler free play while driving and less chance for exhaust leak due to exhaust system. It can reduce the shaking of exhaust pipe and noisy of shaking. It's perfect for replace old or cracked exhaust mount. Made of high-density rubber compound providing extra durability and strength. Anti-abrasive, anti high temperature and Not Easy Damage.