ITEM NAME:Marine 316 Stainless Steel 2" Round Boat Hatch Lift Ring Handle Lock Latch Description: Materials: Marine Grade 316 Stainless Steel Cut Out Hole: 50mm/ 2 inch. Surface diameter: 63mm/ 2.5 inch. Thread diameter: 9mm/ 0.35 inch. Screw hole diameter: 5mm/ 0.2 inch Superior corrosion and durability Highly polished to a beautiful mirror-like finish Easy to install (No Fasteners Included) Package Includes: 1 Piece Boat Hatch Latches Turning Lock Lift Handle Note: Please allow 1-2mm difference due to manual measurement. Thank you..1 Piece Boat Hatch Latches Turning Lock Lift Handle. Materials: Marine Grade 316 Stainless Steel. Highly polished to a beautiful mirror-like finish.