Fits most 4-1/4" RV bumpers. Collar is 3-3/4". Tabs fit in pre-drilled bumpers or add holes. Constructed of high impact rubber that won't shrink or fade. 2/Pk

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov