Purvis Industries

This JacKey set contains 5 long bits in inch sizes 3/16, 7/32, 1/4, 5/16, 3/8. JacKey wrench sets are manufactured from high carbon steel bar. These wrenches are available in convenient sets which cover a broad range of fractional and metric sizes. Available in industrial black finish. A special purpose tool set designed for use with 6 point socket (Allen) head fasteners.

Martin JacKey Wrench Set, 5 Piece, Specifications: 3-3/8 to 5 in L Bit, 5-1/4 in L Handle, For Use With: 6 Point Socket (Allen) Head Fasteners, Steel

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  Manual https://www.purvisindustries.com//ASSETS/DOCUMENTS/ITEMS/EN/Martin_89311_Manual.pdf