They believe recruiter X understands the role and company well enough to do the grunt work of reading through and filtering down candidates without disrupting e

They believe recruiter X understands the role and company well enough to do the grunt work of reading through and filtering down candidates without disrupting everyone's work flow until it gets to the final set of candidates. They are small enough that they cannot justify developing and maintaining internal recruiters who can do it better. They believe the recruiter's pitch that they know the industry and have databases of people to search and reach out to and so can speed up the process to find a qualified and interested candidates. Because apparently it is generally good enough for the executives that are making that outsourcing decision. Some combination of all of the above