DMR 3" gauge extension arm is machined from 6061 T-6 billet aluminum. Comes with 5/16" bolt. These work great with our gauge brackets, gauge clamps, gauge housings or anything else you need to raise, lower, extend, or get just a little more clearance. The 3" extension measurement is taken from the center of the bottom hole to the center of the top hole of the arm.  The male end measures 3/8" (.375") wide and the female end inside dimension is 3/8" also. They will work with our gauge brackets, riser gauge clamps, or any gauge housing that will accomodate that 3/8" width. These go perfect with other brand housings such as Kraus, and many many more. All of these parts are available separately in this section on the website. Available in a variety of anodized colors, chrome, powdercoat, and machine finish. Machine finish may have small imperfections from the machining process and have not been smoothed or polished, only deburred. It is meant to be coated and finished by the customer but can be scotchbrited or run as is. Due to the thickness of powdercoat, powdercoated parts normally require some or all of the powdercoat to be removed where the mating parts attach such as gauge clamps, extension arms, or gauge housings. This sometimes includes removing powdercoat from bolt holes also.  Harley Bronze powdercoat is now available. THIS COLOR IS NOT CONSISTENT AND IS NOT GUARANTEED TO BE THE SAME TONE THROUGHOUT THE PART. THIS IS THE SAME WAY IT IS WITH THE HARLEY BRONZE FROM THE FACTORY. NO RETURNS ON BRONZE POWDERCOATED PARTS DUE TO COLOR INCONSISTENCIES. Powdercoat parts are done per order and usually take 1 to 1-1/2 weeks turnaround. PROUDLY MADE IN USA!!!