T-hinge specifications: Length: 151mm (5.95 inches), Width: 75mm (2.95 inches). Thickness: 4.5mm (0.177 inches). Screw: M5x20mm. Marine Grade 316 Stainless Steel: 316 stainless steel provides excellent corrosion resistance and has a polished finish. It can withstand harsh marine environments and is not easy to rust. Heavy Duty Cast Iron Construction: Thickness: 4.5mm (0.177 inches). It will last a long time even if the hinges support heavier doors and larger hatches. Smooth Opening and Closing: The hinge and the solid pin increase strength and ensure smooth operation. hinges operate with sliding bearings, which open and close smoothly without noise. Wide Application: Hinges are perfect for exterior applications and can be inserted into doors and hatches. Applicable to boat/family/marine/yacht or windows, lockers, cabinets, decks, doors, tool boxes, etc. Color: Silver Material: 316 stainless steel Size: A 151 x 75 x 4.5 mm Package Contents: 4 x Boat Hinges 28 x Screws Only the above