MTN1104 Features: -Ideal for removing broken studs and screws.-Made of Industrial grade chrome molybdenum (chrome-moly) steel alloy.-4 Pc. SAE Chrome-Moly Steel Stud Puller Set. Includes: -Comes in blow molded case Includes sizes 1/4in., 5/16in., 3/8in., and 7/16in.. Warranty: -Sets & Kits do not have warranty/ see individual pcs for details.