It's a ebmx direct mount it is 2.5 inch rise and if you want to run ebike bars it's 31.8 mm and if you want to run pro taper contour are 28.6 mm but they are out of stock but if you want you can get the warp 9 Direct mount and they'll fit warp 9 handle bars. chargedcycleworks.com/products/warp-9-transformer-direct-bar-mount?variant=43742268850392 Or if you want to use pro taper bars you can use shims with the warp 9 Direct mount chargedcycleworks.com/products/warp-9-transformer-direct-bar-mount?variant=43742268850392 On our bike we run Pro taper contour Windham bend.