Security Picture Hangers Kit Spring Lock Quick Release Tool Picture Hooks Security Hardware Kit for Wooden Polymer Picture Photo Frames Spring Lock Release Tool (Pack of 1). SISI UK is one of the leading manufacturers and suppliers of world class quality hardware products in UK. Sisi UK Ltd is a family run business that has been established for over 30 years. They are distributors of hardware, ironmongery, DIY, household, security and pest control products. They are well known for their fast and professional service The system consists of wall mounted T-head hooks that slot into brackets installed onto the back of the framed picture! The only way to remove your pictures or even access the security fittings is with the Security Key! Ideal for public areas like Galleries, Pubs, Bars, Hospitals, Hotels etc, where an Antitheft security system can be essential! And most importantly