This is the same 3/8-24 threaded bleeder screw supplied in the MSE Gem LD19 Brake Caliper (Part No. 3599-200). It will also fit the original AP/Lockheed CP2505 (LD19) caliper, as well as most others that accept a 3/8-24 bleeder. Sold individually, 2 screws required per caliper.*
* Some early Lockheed calipers were originally equipped with just one bleed screw, with a plug screwed into the lower bleeder port.