1.100% brand new2.It is strong, stable and sturdy, beautiful workmanship, aluminum alloy body and stainless steel screws that can be reused many times.3.Adjust the chrome steel screw by using the hexangular key to fit the frame thickness.4.Fit for music heights greater than 15mm/ 0.59 inch,track thickness no greater than 16mm/ 0.63 inch.5.Suitable for smoothly utilized to maximum environments; By keeping the windows partly open and closed, the burglar-proof and thieves can stop adolescents from fallingcolour:SilverMaterial:Aluminum alloyPackage Contents:10 * Sliding Window Locks2 * key2 * L key (bend type)10 * 20mm Screw10 * 8mm ScrewOnly the above kit content, different merchandise will not be included.Note: Light shooting and assorted exhibits could cause the colour of the item in the photograph just a little diversified from the genuine thing. The dimension allowed error is +/- 1-3cm.