Greenfield Slip Ring Anchor 8 Lb. 8 lb.. Anchor Chain should always be used with steel fluke anchors to provide weight necessary to maintain the proper approach angle for setting. Fluke anchors require a scope of at least 5:1 (rope length to water depth) in order to set properly. 7:1 scope is recommended. Features of Greenfield Slip Ring Anchor 8 Lb. Recommended Boat Size (in winds up to 30 Knots): Boats Package Contents: Greenfield Slip Ring Anchor 8 Lb. Greenfield 669-11-B: Slip Ring Anchor 8 Lb. 8 lb.