Jay & Kay Manufacturing is a provider of welding and customized fabrication services. The company is one of the largest manufacturers of aluminum welded radar arches and hard tops throughout the world. It offers a range of radar and tubular arches, wake board towers, outboard mounting brackets, swim platforms, radar masts, mounts, swim ladders and anchor rollers for marine applications. Jay & Kay Manufacturing is a supplier of ladders and stairs, vents, cover plates, door frames, posts and swim platforms. The company specializes in providing machining, milling and turning capabilities. It additionally offers tube testing, bending, sorting, painting and assemble line services. Jay & Kay Manufacturing maintains a location in Croswell, Mich.