Bare aluminum twin-cylinder air compressor head with two open bo…

Close-up of a disassembled twin-cylinder air compressor head casting resting on a black plastic tote lid marked with recycling and 'GRASP HA' molded lettering. The bare aluminum head shows two open bores, four corner bolts with dark hex heads, and threaded side ports; a brass fitting sits at the top edge of the frame.

AI caption January 2008 · Photo 182 of 407