Feature:
Window Restrictor Hook -- This Essential Child Safety Device Is Designed To Limit Opening of a Window in a range Prevent Children or Pets from Falling or Running Out, Ensure Their Safety.

Durable 304 Stainless Steel-- These Window Security Locks Are Made of 304 Stainless Steel with Great Corrosion Resistance, High Toughness and Rust Protection, Extend Its Service Life.

Easy To Operate-- Just Need a Screwdriver To Fix It To The Window, Complete The Installation. (Screws Included). 
Perfect Application-- This Window Restrictor Is an Ideal Choice for Home, Kindergarten, School Safety and More.

The gap between the window sash and the window frame should be between 14mm (inclusive) and 17mm (inclusive), and the entire buckle can be hidden when closed.

The inner and outer windows are easily limited, the ventilation is convenient, and the position of the window sash is fixed.

Specification:
Material: 304 stainless steel 
Size:Shown as the picture
Color:Silver
Style:Modern
Window hook size: 10.2cm*1.4cm*0.9cm (horizontal line)
Base size: 4cm*1.4cm*1.1cm
Screw size: 16mm
Spring rotation angle: about 30°-60°
The lock can be unlocked and buckled.

Package Include:
1/2pcWindow Restrictor with Screws