Gedore Folded Hex Key Male 3/4 " 42 3/4AF

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INTERNAL HEXAGON WRENCHES CHROME-VANADIUM steel, chrome finish DIN ISO 2936. With beveled heads for easy insertion into the screws. US inch hexagons, Weight: 0.68122838958 pounds, Manufacturer: Gedore

Zoro Tools

Chrome vanadium steel 61CrSiV5, up to SW 1/2" galvanised, from SW 9/16" chrome-plated