●🛒Material: Made of rubber material with good wear resistance and impact resistance ●🛒Size: OD: 2.5inch(62mm), ID: 1.10inch(28mm), Height: 1inch(25mm), Screw Hole: 0.37in(9mm) ●🛒Easy installation: Easy to install and remove, easy to use ●🛒Features: Stable structure, wear and pressure resistance, impact resistance, practicality ●🛒Use: Round trailer ramp door bumper is suitable for all kinds of trailer ramp doors and truck door crash prevention devices