The Thexton GM "W" Rear Brake Tool, No. 832, works on large and small "W" springs commonly found on older trucks, SUVs and cars (2009 and older models). The inside design of this tool allows obstacle free use by technicians. This tool is made in the U.S.A. Specific applications include large springs on most GM trucks and SUV's older than 2009 (i.e. Silverado, Suburban, Yukon) and small springs on most GM cars 2008 and older (i.e. Cavaliers, HHR, Cobalt, G5, Malibu).