Marine Grade Stainless Steel 316 , very tough and resistant to corrosion With rubber tip bumper to protect door Holds door securely against rubber stop reducing rattles Spring loaded latch allows for quick and easy release used for types of yachts such as ship yachts, fiberglass yachts, inflatable yachts, business yachts, etc Colour:silver Material:316 stainless steel Package Contents: 1 x Boat Door Stop Stopper Catch set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.