Brand new, molded rubber seal, that fits around the front windshield glass and the cab windshield opening.  This windshield weatherstrip is an exact reproduction of the original and replaces your old, cracked & leaking rubber perfectly. 

Standard weatherstripping is used on trucks  "without" the Stainless Steel windshield trim around the glass.  Deluxe weatherstripping has an extra groove in the rubber to accept the glass and the Stainless Windshield Trim.