Fixed Roller with dual rollers for Boats 20ft. to 100ft.37"L x 4"W Up to 50kg/110lbsHigh quality universal self-launching rollers are designed for easy mounting on most bows. Made of solid AISI 316L Stainless Steel with a low profile design. Dual roller for self-launching and smooth parking of anchor. Best suitable with the Anchorlift™ XR, Anchorlift™ TPX, Delta, Rocna, Mantus, Manson Supreme, Fortress FX and Fortress Guardian style anchors.