a single allen key wrench against a white backdrop

isolated white backdrop background single one hex key wrench allen inbus driver bolt bolts screw screws head heads internal hexagon hexagonal recess recesses socket sockets fit fitting size sizes correct steel rod form formed forming blunt ends snugly bend bent degrees two arms unequal lengths resemble resembling shape shapes shaped tool tools held hand twist twisted long longer short shorter arm torque designate designated sized kit kits insert inserted varying vary registered trademark circa 1910 manufacturing manufacture company apex