7PCS: 10MM (YT-4903), 11MM (YT-4904), 12MM (YT-4905), 13MM (YT-4906), 14MM (YT-4907), 17MM (YT-4910), 19MM (YT-4912); MATERIAL: 40CRV, HRC 42- 48, AMERICAN TYPE, MIRROR POLISHED, LENGTH: 135MM, 15 DEG OFFSET, AS- DRIVE, 12PT; STAMPING: 1ST SIDE: YATO LOGO <(>&<)> ITEM NO <(>&<)> SIZE / 2ND SIDE: CHROME VANADIUM <(>&<)> SIZE