BleedZone Shimano MTB Kit. One-Year Limited Warranty (see seller profile for more details). This kit can be used with older models of Shimano mountain bike hydraulic brakes that do not have a bleed port. Instead of using the plastic adapter to screw into the bleed port, simply use that fitting to drain fluid from the brake reservoir. WARNING: only works with SHIMANO 2 piston mountain bike brakes that have a bleed port and is NOT compatible with Tektro, SRAM, Magura, or any other brand of hydraulic brakes. The 4 piston block is sold separately here: www.amazon.com/dp/B08819W38D. Check out our other kits with a funnel adapter specifically designed for road brakes, and please feel free to reach out if you have any questions, comments, or concerns! BleedZone is dedicated to providing the highest quality bleed kits with exceptional customer service! Visit our store to find other bleed kits for Avid, Formula, Tektro, and Magura hydraulic disc brakes along with bleed kits for RockShox suspension components: www.amazon.com/shops/bleedzone.