Reelva 4PACK/8PACK Sash Jammer + Fitting Screws, uPVC PVC Window Door Lock, High Security Arm White

● Strong Zinc Cast Alloy construction
● Durable White Powder Coated Finish
● Extra Security and Easy to Use- just flick on and off
● Sash Blockers are designed to provide additional security for your uPVC doors and windows
● Easy to fit and easy to operate- just a twist of the Jammer Arm will lock or release the sash