Securely lock window sashes to protect children and pets. Also effective for preventing mischief and as an anti-crime measure. Easy to install and allows locking even while ventilating. Recommended points: ・Peace of mind with a separate key type. ・Safe and secure design that allows window locking even while ventilating. ・Easy installation and strong locking Product specifications: ●Size Main body: Approximately 6.6cm wide x 3.5cm deep x 1.6cm high Stopper foot part: Approximately 1.5cm high ●Included items Window block main body x 3 Hex key x 2 ●Instruction manual Printed on the package ●Usable locations Entrance, windows, sliding doors, upper and lower frames, sashes, verandas, toilets, kitchens, doors, apartments, rentals, rooms, etc. This is a new, unopened item. Please note that there are traces of the barcode sticker having been removed from the package. We would like to ship via Takkyubin Compact, so we will fold the top part of the package. Thank you for your understanding. Please feel free to ask if you have any questions (*^^*) Thank you for viewing.