Check the listing for details. 5/8" Hole Silicone Rubber Step Bushing Firewall Pass-Through 5/16" ID x 1" OD. Color: Black, Condition: New. Listed at 14.79 USD. 5/8" Rubber Wire Step Bushings Motorcycles Auto Marine Heavy Duty 5/16” ID 1” OD Ideal for automotive, electronics, cabinets, & enclosures High-Density Rubber Non-Skid Feet RubberMax 100 Series “Strength in Every Application” Rubber Bushings Rubber is one of the most common materials in which bushings are made. They are inexpensive, readily available, and able to absorb most vibrations and noise transmitted by the objects to which they are attached. Bumpers with a medium-hard durometer (60A) withstand higher levels of impact than softer bumpers. Applications include: Electronics, Automotive, Motorcycle, Powersports, Trucking, Marine Used for wiring management and many automotive & electronic applications. Can also be used as bumper pads, rubber feet on instruments, an.