Lies flush to hatch lid, which eliminates tripping and snagged lines. Features chrome plated brass and stainless steel construction. Drains water off, not into the hatch. Features easy-to-use lift loops that fall automatically back into recess when released. To install, drill 3/4″ hole, drop lock in and fasten body nut. That’s it. A 2″ long x 3/8" offset cam will be sent unless otherwise specified in a note to the seller. Locks will be keyed alike to individuals unless otherwise specified in a note to the seller To install, drill 3/4″ hole, drop lock in and fasten body nut. That’s it. If the customer has a request or a question please call Sarasota Quality Products at 440-899-9820 or contact Sarasota through Amazon chat by first clicking on the "Sarasota Quality Products" name under the "Buy Now" button then press the "Ask a Question" button. Features easy-to-use lift loops that fall automatically back into recess when released. The LR500 retail package contains the folowing parts: DC-735 lock, small lock washer, chrome plated brass nut, sem screw, cam, LR555 body plate. set of keys (Important: Keycode is engraved on keys. Write down keycode in case the keys get lost). You will need a phillips screw driver for sem screw.