ITEM NAME:6 Pieces Adjustable Sliding Window Locks Stops Aluminum Alloy Door Frame Se G1L2 6 Pieces Adjustable Sliding Window Locks Stops Aluminum Alloy Door Frame Se G1L2 EASY TO INSTALL: There is no need to install and disassemble with additional tools, easy and convenient to install and disassemble; it can lock the six corners of each window and keep it on the track through the control of the key WIDE USAGE: can be easily applied to most environments; By keeping the windows partially open and closed, the burglar-proof and thieves can prevent children from falling and protect the safety of their families while improving air circulation MATERIAL AND SIZE:made of aluminum, it is strong, solid and sturdy, exquisite workmanship. volume approx. single holes: 3 x 2.4 x 2.4 cm/ 1.18 x 0.94 x 0.94 inch(LWH), double holes: 6x 2.4 x 2.4 cm/ 2.36 x 0.94 x 0.94 inch(LWH) ,apply to track heights more than 1.5 cm/ 0.6 inch,track thickness no greater than 1.6 cm/ 0.63 inch Color: yellow + silver Durable material: It is strong,solid and sturdy,exquisite workmanship,aluminum alloy frame and stainless steel screws that can be took full advantage of many times. Material: aluminum alloy Quantity: 6 pieces Package includes: 2* large window lock 4* small window lock 6* protection pad Warm notices: Designed for horizontal sliding windows and doors; Not for plastic window frames.Material: aluminum alloy. 2 large window lock. 4 small window lock.