Kit includes 77 pieces. A completely new and better way to remove brake bleeder screws. New and improved one-piece, compact designed tool perfect for tight spaces. The BB007 allows you to: Reduce labor time. Avoid unnecessary and difficult drilling, tapping, or heating. Decrease the risk of damaging the screw and caliper. Complete brake jobs faster and avoid delays. Advantages: Everything you need in one easy-to-use tool kit. Pays for itself in as little as one brake job. Works with both aluminum and cast iron calipers. Replacement bleeder screws included.