Large 3/4 inch hex head for easy removal without stripping Zinc coated to prevent corrosion Compatible with Powerstroke 6.0 F250 - F650 and Ford LCF New Oring included Made in the USA THE PROBLEM: The OEM fuel pump / filter assembly ("Horizontal fuel conditioning module" or HFCM for short in Ford-speak) drain plug on these applications features a flush mount and requires a 6mm allen wrench to remove. Unfortunately, due to the under-vehicle location of the pump assembly the plug usually becomes corroded in place, particularly in northern climates. When removal is attempted the allen head often strips out and the plug becomes very challenging to extract. TECH TIP: When rounding of the allen head occurs, use a small sharp punch and a sharp whack with a small hammer to start the plug rotating in the correct direction. OUR SOLUTION: Tired of wimpy solutions? We found a better way! Our plug "The Monster" features a 3/4 inch hex head. No more rounding off ! A zinc coating is employed to minimize corrosion issues. We have recently upgraded the monster HFCM plug to include an extension arm that allows the plug to hang from the opening of the HFCM after loosening it. Not only does this eliminate the need to remember where the plug was set down after draining, but it also acts as a guide as the fluid drains preventing it from running down the frame rail (Esp. on 4x4's) and making a mess! (includes a new o-ring) Do it right, Do it once! APPLICATIONS: F250 - F650 and Ford LCF with 6.0L engine. TECH TIP #2 Don't overtighten - just snug is plenty! Tech TIP #3 Ford recommends draining the HFCM of water monthly - or whenever the water-in-fuel light comes on. Consider this a minimum.