Description Are you looking for a practical, yet affordable sash blocker lock? Are you in search of a sturdy, trustworthy tool that can do multiple jobs? If yes, look no further! Our professional sash blocker lock must meet your needs. It is one of the best choices for you. Effectively prevent children from opening doors and windows to avoid accidents. Features - Material: Zinc alloy. - Size: 6.50X2.40X1.50cm/2.55X0.94X0.59inch. - Manufactured from carefully selected zinc alloy materials, it is sturdy and will not be easily damaged. - Just wring the interference arm to lock or release the window sash, easy to use. - The installation method is simple and won't take you much time. It will meet your needs! - After good workmanship, the surface is smooth and can be used with peace of mind. - Effectively prevent children from opening doors and windows to avoid accidents. 2 Sets x Window Sash Locks Manufactured from carefully selected zinc alloy materials, it is sturdy and will not be easily damaged Just wring the interference arm to lock or release the window sash, easy to use The installation method is simple and won't take you much time It will meet your needs!After good workmanship, the surface is smooth and can be used with peace of mind