Solo Bleed 10mm x 1 in. x 27mm Thread Metric Pair. Brake bleeding has always been an inconvenient and messy job. Commercial shops typically use an expensive pressure bleeder—which, unless used properly, can introduce air bubbles into the system through cavitation. The time honored manual method (still universally used in racing) requires two people: one to pump the pedal, and another to open and close each bleed screw in sequence. Again, proper procedure and coordination are required to prevent air inclusion. Earl's SOLO-BLEED bleeder screws solve both problems. A direct replacement for the original equipment bleeders, SOLO-BLEED allows one person to safely bleed brakes without a mess and with no chance of air inclusion.