Model TL-53 Deluxe Gooseneck Combo. TL-53 consists of Model TL-50 (Model TL-50 is precision-made of aircraft aluminum and will not rust. It features a 3/4 inch heavy-duty steel locking pin. Fits Hammerblow, Stallion, Superior and T.E.M Gooseneck style couplers), Model TL-51 (Secures the adjustable toppart of coupler. Fits all gooseneck style round or square tube designs) and two TL-45 large padlocks in one convenient package.