Steering 12mm Thread Wheel Dome Nut 316 Marine Grade Stainless Steel Description: Polished 316 stainless steel construction 12mm thread size Polished to a bright mirror Designed to steering wheel numbers Overall Height: 22mm 7/8"; Hole Diameter: 9mm/0.4" Specification: Material: 316-grade stainless steel Ideal for Boat steering wheel, Yacht steering wheel Thread Size: 12mm Package Includes: 1 Piece Steering Wheel Mounting Nut Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you. _x000D_