Hex Key,Allen Key , nickel Hex-key

Product ID: Hex Key

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HEX KEY
Standard (Square head ) black Hex-Key
Model:1.5mm~32mm
Metric Standard GB L-type Standard square Black oxide & nickel Hex-key
Material: 1.5mm-8mm steel 45 #, 10mm-19mm with 40CR alloy steel manufacturing
The overall heat treatment HRC45-56 degree

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Fastener , Valve/pipe Fittings ,Tool