Fas-Trac™ III Replacement Suspension (10153382) by MSA®. 6-Point. With Flush Rear Lug Attachment and 3 Level Nape Strap. Ensuring your workforce wears their safety helmets can be a real headache. MSA, the leading provider of protective helmets, has the perfect remedy: the Fas-Trac™ III Suspension. No more pressure headaches. No more pulled hair. No more falling off. No more sacrificing worker comfort for safety. Market-leading MSA helmets now have a comfort-leading suspension!