Push-pull window lock safety device exquisite workmanship, wear-resistant, rust-proof, anti-aging, durable. Quick installation. No tools or drilling are required. Sliding window lock security is mounted on the sliding window/door track to prevent sliding and increase security. Avoid the hidden danger of children and pets climbing the window. Also, it prevents thieves from getting in. It is constructed of stainless steel material and has a long service life. It is available in 2 styles, you can choose the one according to your need. This product is perfectly suitable compatible home, household, bedroom, restroom, etc. Item Name: Sliding Window Locks Material: Stainless Steel Features: Eye-catching, Practical, Long Lasting, Easy to Install Size Details: Single Hole Size: 3cm x 2.4cm x 2.4cm/1.18" x 0.94" x 0.94" (Approx.) Double Hole Size: 6cm x 2.4cm x 2.4cm/2.36" x 0.94" x 0.94" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Type A: 2 x Single Hole Sliding Window Locks or Type B: 2 x Double Hole Sliding Window Locks