Genuine Gitzo D340.52 wrench for the G1177M, G1212, G1220, G1222, G1224, G1226, G1227, G1257, G1257LVL, G1258, G1258LVL, G1277M, G1297, G1298, G1312, G1318, G1320, G1325, G1326, G1329, G1341, G1342, G1346, G1348, G1349, G1377M, G1415, G1416, G1515, G1548, G1548GT, G1549, G201, G212, G220, G222, G224, G226, G312, G315, G317, G320, G321, G322, G326, G336, G338, G341, G342, G346, G347, G411, G412, G416, G421, G421CR, G421RA, G501, G502, G506, G507, G508, G509, G524, G525, G526, G527, G528, G529, G621, G621CR, GT2940L, GT3530LSV, GT3530S, GT3540LS, GT3540XLS, GT5540LS, GT5560SGT, G1527, G1518, and the G1411. This wrench fits 10mm and 13mm nuts or bolts. Made by Gitzo Italy.