BleedZone Kit for SHIMANO Hydraulic MTB Brakes. If you already have mineral oil, this kit includes all the essentials to get the job done. One-Year Limited Warranty (see seller profile for more details). 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 our kit with two syringes instead of a funnel, which can be used with brakes that have only a reservoir without the bleed port. Also, 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.