Service 5/8" recessed automotive spark plugs, plus marine, small engine, and specialty motors; Includes recessed magnet to hold plug; 10" long for deep-reach applications; 3/8" square drive; O.D. = 21.55mm (.848); Applications: Honda (1980 & up); Toyota (excluding Pruis and Corolla); Mitsubishi; Chrysler/Dodge/Jeep/RAM; BMW; Mercedes Benz; Porsche; Volkswageudi