BJ Enterprises C-4 Pneumatic Oil Filter Crusher reduces automotive oil filters by 75% of their original size in only 5 seconds, removing 95% of the free-flowing oil so it can be recycled. The C-4's crushing chamber accepts filters up to 7-1/2" tall and 5" in diameter, with a large 1-1/2" shaft its only moving part, and the crusher's 1-piece, ductile safety door must be closed for the unit to operate. This unit also features wall-mounting brackets, a 12" flexible drain hose, full buna U-cup, cast 1-piece ductile housing, nylon top bearing, composite air cylinder, and oil-less bronze lower bearing. All parts in contact with the air are rust proof, and BJ Enterprises offers a lifetime warranty on the C-4's housing (one year limited on all other parts). The C-4 requires 125 to 175 PSI of air, though neither an oiler, lubricator, or air regulator are needed, and this unit comes with a small stand (model 7590), making the crusher's dimensions 66" high, 21" wide, and 22" deep overall