This roller fitsDanforth anchors from 13 to 28 lb. and Delta style anchors from 14 to 35 lb.Anchor rollers make dropping and weighing anchor easier on you and your boat. They help reduce chafe, prevent scratches and dings to your boat's finish and provide a secure place to store your anchor when used in conjunction with an optional chain stopper or tensioner. We stock rollers to fit the most common combinations of anchor, mounting style and boat.Key FeaturesConstructed from Grade 304 stainless steel with Delrin wheels Easily installed using common tools Installation note: overhanging anchor rollers should be supported along at least 2/3 of their length Dimensions: 5" W x 19" L x Base: 12 1/2"Mounting Length: 12 1/2"Inside Channel Width: 5"Fasteners not included; uses 3/8" bolts