Metal and ABS Plastic - Metal and ABS plastic, more durable, less heavyOne Handle - One handle when it comes out, keep the door locked when it comes inKnob for Nickel Coating - Must give your motorhome/van/yacht/caravan the expected lookEasy to Use - When the lock is in a position that matches the lock/tongue of the lock and the door. It works well and is easy to useFairs - Distance between fixing holes 37mm; door hole diameter 20mm. For cabinets 14-16mm thick. Each lock is equipped with 4*screws, 1*replacement knob cap and 1*strike plateSpecifications:Material ABS plasticHole diameter 20mmBoard thickness 14 to 16mmLock screw distance About 39.19mmPlate hole distance about 20mmPackage size 116mm*87mm*9mmSteps1. Drill a 20mm hole in the cabinet and mount the round ring;2. Install the lock base through the round hole;3. Tighten the lock with longer screws using a Phillips screwdriver (Tips: the distance between the locks is 36.19mm);4. Fix the "L" strike plate with shorter screws on the