Industry standard 2-1/16" diameter Feature a non-glare, high-brightness, vacuum fluorescent graphic displays with no engraved annunciator, for a black out effect when off Choose from a variety of mounting options Flush mounted into a tank, bar mounted into a cup or bracket . . the possibilities are endless You get the durability of machined aluminum housings and the brilliant look of chrome bezels All come with manufacturer's 2-year warranty 0-400° F Oil Temperature gauge; Note: Requires 730-498 sending unit for proper installation.