SISI UK is one of the leading manufacturers and suppliers of world-class quality hardware products in the 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. These door latch bolts are strong and durable as they are made from solid steel. This neat finish will ensure the slide feature remains intact and they stay corrosion free. Quite often, they are used as an additional locking point on a door for increased security.