Spring lock for hatches and cabinet doors. Simple nylon ratchet. Press the push-button to lock it and is then aligned, press the button to open and to release the cabinet doors making a knob grip at the same time; 2-screw mounting click and ring nut from the outside with a hole of Ø size 26 mm; nylon casing, stainless steel springs. 
Attention: WITHOUT KNOB, only ratchet. Knob and ring nut to be ordered separately.