4' Roller Bunk Roller bunks make loading and unloading small craft at very short or even dry rams easy. Great for ramps where it is not practical to float the boat onto the trailer. Pre-assembled and pre-drilled for easy installation. Maybe be installed using mounting brackets if lift and/or angle is needed, or may be bolted directly to trailer frame for a flat bottom boat, or even mounted on top of existing bunk boards. Features: * Durable 2' polypropylene rollers on 1/2' shafts mounted in a heavy gauge pre-galvanized channel * Supports up to 1500lbs of well distributed weight * Mounting hardware not included * Sold in pairs Warning [https://productimageserver.com/prop65/6pt.png]WARNING: This product can expose you to chemicals including LEAD,Chromium (hexavalent compounds) which are known to the State of California to cause cancer, birth defects or other reproductive harm, and NICKEL (METALLIC),COBALT METAL POWDER,BERYLLIUM which are known to the State of California to cause cancer, and ARSENIC ,CADMIUM which are known to the State of California to cause cancer or other reproductive harm. For more information go to P65Warnings.ca.gov [http://P65Warnings.ca.gov].