The NRS Frame Oar Mounts (AKA Oar Towers) comes stock on many of our raft and cataraft frames. Now in high-tech hot-forged aluminum for a stronger, lighter, sleeker mount. Forging aligns the crystalline structure of the aluminum, creating a stronger oar mount. This increased strength has allowed us to streamline the design, reducing weight by 25% over the older model. A tough nylon bushing allows the oarlock shank to rotate friction free, and the bushing is easily replaceable, Item # 91043.01. You can easily adjust the oar mount's height by rotating it on the side rail. Molded ridges on the gripping surface increase holding power on our 1 5/8OD frame pipe. Accepts 5/8 diameter oarlocks and pins. Weight: 6 single: 1.5 lbs 8 single: 1.875 lbs 10 single: 2.44 lbs Category: Frame Parts Material: Hot-forged 6061-T6 aluminum alloy Features: Includes u-bolt with nut and washer