Protect your outboard motor from the stress and strain of trailering! Constructed entirely of aluminum, these are 100% rust-proof to provide many years of protection for your outboard motor and boat. Designed both to protect the leading edge of your motor's lower unit as well as the transom of your boat by transferring the weight of your engine to your boat trailer. Also helps lock the steering mechanism, eliminating wear to the steering system. Includes rubber strap. Easy to use. Includes molded resin grip pads. Adjusts 21" to  31" WILL fit most motors.