Stock photography, photos: allen key Stock photos of a set of allen keys of various sizes Photograph: © Choon Boon Ng Click for a larger image and more information Keywords associated with this stock photo: allen,key,tool,equipment,bent,curved,metal,iron,steel,black,do-it-yourself,diy,screw,fixit,fix,fixing,tighten,building,construction,hardware,home,repair,renovation,improvement,handyman,torque,force,mechanics,workbench,workshop,work bench,technology,mechanical,industry,industrial,object,isolated