Solid brake guide pins. Bought new from Bimmerworld; never even opened package until this week to take this picture. Bimmerworld price $129 for the two sets to cover both front and rears. Would like $70 plus shipping from 44273 jtroche1@neo.rr.com 330 769-3525 See Bimmerworld web site, catalog, brakes, performance for their listing for this part.