Package includes: A total of 2 sliding window locks, with 2 matching keys. Material: The sliding window lock is made of stainless steel and the key is made of metal, which is durable and corrosion-resistant. Size: The sliding window lock is 67 x 16 x 36 mm and the key is 49 x 5 mm; please refer to the size drawing for the specific size. Design: Easy to install, no need to install other tools. Each window lock has a hexagonal key with a wrench, which can be tightened by turning the hexagonal key to the right. Purpose: Suitable for horizontal sliding windows, vertical sliding windows and sliding doors, etc.