Bicycle Bleed Brake Block Part Kit, Piston Retainer Tool for AVID Hydraulic Disc

[Good compatibility] Our universal bleed block is designed to fit any brake calliper. Suitable for AVID hydraulic disc brakes, etc. [High strength material] The high strength material is to use, effective, easy to use. [DIY bicycle brake] Essential tool for any DIY brake bleeder or bike mechanic. Use this tool to help them assemble their own bikes. [Design for] This block is specially designed for bicycle disc brake,which will have great effect on your brake using. [Helpful tool] Perfect for securing the calliper pistons during brake bleeding.