9pcs ball end allen key set Made of Cr-V steel Hardened and tempered 9pcs set in plastic case high quality allen key setblade made of Cr-V steel, heat treated, rustproofavailable in different sizescontents: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm 9pcs ball end allen key set, allen key wrench, hex key wrench set