Slipfix Exterior is the first model we have created for outdoor uses, it is a combination of stainless steel parts and epoxy coated and baked parts, the reason is coated parts could not be made from stainless steel. We have tested the product to 1,000 hrs corrosion test and 1,500 hrs of salt spray test with satisfaction. Slipfix is excellent for situations where a rail is fitted between fixed posts or to any post fixing application, a strong, durable and invisible joint is created.