New Premium Quality Smiths Type Chronometric Bulb Holder Assembly. Comes with everything you needto adapt and fit a bulb to your Speedo / Tach! Screws on the bottom of your gauge as O.E.M.. Works with most Smiths Chronometric gauges as fitted to most brands from: Triumph, BSA, Norton, Matchless, AJS, Sunbeam, Etc from the 1940’s through the early 1960’s. Please refer to your parts catalog for proper fitment.*****Always check your parts book to ensure that this part will fit your application!*****Made in TaiwanO.E.M Part number is P53279/1