USAG 283 Series Offset Metric Box Wrench Set -13pc - Offset and thin-wall box end improves access to recessed fasteners. 12pt (30 degree increments). OGV profile transmits torque through the fastener flats instead of the corners to reduce wear. Identical to Facom's 55A series....cheaper plus US warranty. Adds the 20mm and 25mm sizes not included in the Facom 55A.JE12 set. Metric sizes include.....6 x 7 - 8 x 9 - 10 x 11 - 12 x 13 - 14 x 15 - 16 x 17 - 18 x 19 - 20 x 22 - 21 x 23 - 24 x 26 - 25 x 28 - 27 x 29 - 30 x 32 .