B&M's Locking Transmission Dipstick is designed for use with all Ford 10R80, 6R80, 4R75E and 4R70E transmissions and is meant to be left in the vehicle and locked into place. This easy-to-use dipstick allows you to quickly check the transmission fluid level and fluid quality without going to the dealership. The Locking Dipstick contains billet stainless steel fittings, steel braided hose and black mil-spec anodized aluminum 6061-T6 cap and bracket.