Description: Suitable for motorcycle boat car marine engine part Voltage: 12v/24v Easy to use and install, accurate readings every time Mounting Hole Diameter: 52mm, mounting in the back Made of high quality reliable and stable material, anti-aging, long life Specification: Red Led, Black Dial, Red Pointer, Material: Plastic Length: 55mm Instruction Included Package Includes: 1 Piece Oil Pressure Gauge Kit Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the product size and picture carefully before making payment. Thank you