Long handle T25 Torx L-wrench.
This is the wrench size needed to remove/install the SRAM direct mount chainrings. It can be difficult to properly engage a socket into these bolts because the crank spindle is very close to the bolts. This wrench makes the job easy and reduces the chances of stripping out the bolt head.
Be sure to buy a set of our replacement bolts as well.
4" long x 1" high