4" long drivers in chrome plated holders. 1/4", 3/8" or 1/2" drives. S2 alloy steel bits, heat treated to RC 60/63. Includes plastic blow molded case with window. Lifetime warranty ZXN driver set for all German vehicles. Sizes include: 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm. Packaged in a plastic case with 4 color descriptive sleeve.