Part number: # 190171
 Released: Jan. 09, 2003
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Set of Hudy Professional nut drivers with five popular inch sizes. Ultra-lightweight, ultra-durable nut drivers feature superb fit and finish. CAD-designed socket tip, made from world-renown Hudy Spring Steel, very precisely fits the corresponding hex nut without chance of rounding or marring corners.

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It includes:
#170104 Socket Driver 1/4" ( 6.35 MM )
#170308 Socket Driver 3/8" ( 9.525 MM )
#170316 Socket Driver 3/16" ( 4.763 MM )
#170516 Socket Driver 5/16" ( 7.938 MM )
#171132 Socket Driver 11/32" ( 8.731 MM )