Manufactured in corrosion-resistant 303 stainless steel and manufactured with M3 thread, QDM3I and QDM3E enable fluid power lines to be switched while maintaining leak-free environment in product design or testing facility. Minimized dead volume maximizes sealing capabilities, and both sides of quick disconnect, internal and external, are fully shut-off prior to disconnection. In <1 sec, disconnection is made by pulling knurled sleeve back.