2 Steel Micro 2" Roller Heavy Duty Steel Mini Wheel with Grease Fitting for RVs and Trailers. This premium weld-on micro roller is a must have on any low profile trailer, Rv or 5th wheel. Prevents damage to the undercarriage of your trailer and helps protect your investment. Constructed of heavy duty steel to ensure it can handle every bump you happen to encounter when backing up. Grease fitting allows for easy maintenance to keep the roller properly functioning. Roller size is approximately 2” x 2” with a mounting base of 3” x 2”. Quantity included: 2 2 Premium Weld-On Micro Rollers Wheel size: approximately 2" x 2"; mounting base is approximately 3” x 2” Perfect addition for all low profile trailers or vehicles; helps prevent damage to the undercarriage Exceptional weld-on design with grease fitting for easy maintenance, great for motorhomes and 5th wheels, too! Stunning heavy duty all-steel construction; made tough to last a lifetime