This oil filter drain tool permits draining only aviation spin-on oil filters prior to removal from the engine. Just clamp on to rear of aviation oil filter with cutter, punch small air bleed at the top of the housing with an ice pick, remove cutter and oil will drain freely in-can or hose-extended funnel.
Fits diameters 3-1/2″ to 4-1/2″. For aviation oil filters only!
