Specification: Suitable for 1 1/4 inch openings, 1/8 inch thick panels, high-quality rubber rings that provide protection for wires, cables, hoses, etc  Product function: Provides physical protection for wires, cables, hoses, etc., preventing direct contact with metal edges, sharp edges, or rough surfaces for protection  Premium Material: Flexible sleeves made from Buna-N rubber, offering high-temperature resistance, wear resistance, excellent elasticity, and extended service life.  Compatibility: Suitable for 1 1/4 inch openings and 1/8 inch thick panels  Easy Installation: Rubber grommets are extremely user-friendly and simple to install. They press directly into pre-drilled holes in equipment/panels without tools, ensuring quick and convenient setup.