1~8PCS Sliding Sash Stopper Cabinet Locks Straps Doors Security Anti-theft Lock Window Sliding Door Baby Kids Child Safety DoorsDescription: Feature: 1. serratura di Alta sicurezza finestra scorrevole strumento 2. Instantly blocco scorrevole finestre e porte-nessuna perforazione strumenti necessari 3. Posizionare sulla finestra porta binario e stringere los angeles vite di pollice; bloccare blocco o consentire parziale di apertura 4. Prevents finestra da essere forzato o curiosato aperto da fuori; facile rimozione e riutilizzabile 5. Fits maggior verticale o orizzontale finestre scorrevoli e molte porte scorrevoli a 2.5-4 cm (Ca 1 ''-1.57 '') track-rim larghezza (Regolabile) Iron + rubber; Window stopper are lined with rubber, effectively broaden the friction for the better use and does not damage or scratch your window and avoid any disturbing noise Designed for horizontal sliding windows, Not for vinyl windows; Total length: 2.36"; Width: 1.57"; Height: 0.59" By adjusting window stopper knob; Fit window track spacing from 1.02" to 1.69"; Track excessive more than 0.59", in case affecting the stability of the safety lock No tools are needed; Improve air circulation; Keep your little one safety; Both use in preserving the window last and partial opening Close or open the window before putting in window stopper; Insert the leg heavily to the window groove ; Turn the knob clockwise till the product is secured Use 2 lock in heavy window/door for adding security; This product doesn't warrantly total crime prevention; Please use this product along with crime prevention tools How to use: Lock the window earlier than installing this product. Insert the leg of this product to a groove in order that it is heavily attached with the interior sash. Turn the knob clockwise till the product is secured. Attention: This product might not be put in some sashes, please verify the instructions the again of the product. Fastening this product too tightly may end up in deformation of the window sash or . Fit window no wider than 1.6". Specifications:Material: Ferro + in lega di zinco, gomma Size: circa 6x4x2.4 cm/2.36x1.57 x 0.94inPackage Included:1X Window Stopper