Roxom 6 Inch Concave Keel Roller

6 Inch Concave Boat Trailer Keel Roller 6 Inch Concave Boat Rollers. Made from HDPE Polyethylene, Machined from a solid piece of material these rollers are built to stand the toughest of conditions and still maintain their reliability. These plastic rollers will not split or crack unlike rubber rollers. These concave keel rollers are ideal for use with Aluminium boats & trailers. 6 Inch concave boat rollers are ideal to help centre your boat when you are ready to retrieve. Their concave design allows the boat to naturally fall towards the centre. 6 Inch rollers are designed for small to medium sized hulls. Dimensions : 155mm x 60mm x 17mm bore.