Designed with outboard-engine wells in mind, C.E. Smiths Aluminum Transom-Mount Rod Holder is ideal for adding extra holders to your boat. Made of anodized 100%aluminum for long-lasting performance. Rod security hole and taper line keep your rod secure. Features a heavy-duty 0.38-thick blade, welded 0.33H gimbal bar, 1.63 rod-holder inside dia. and a precision-machined 3H x 2.75W x 0.38D mounting plate. Flared opening and white vinyl liner provide easy insertion of your rods handle. Can be mounted vertically or at a slight outward angle. 10 overall height. Type: Rod Holders.