Attributes . Set of 19 pieces. High-endurance transparent fluted plastic handle. Micro-alloy steel shank offers maximum durability and resistance. Black tip prevents chrome particle shedding. Exceed ASME B107.600, ISO 2380-1 & ISO 8764-1 standards. Square shank allows you to use a wrench when extra-torque is needed. Screwdriver sizes: Slotted: 1/4? x 1-1/2?, 1/4? x 4?, 1/4?x 6?, 5/16? x 6?, 3/8?x 8?, 3/8? x 12?. Cabinet: 1/8? x 2-1/2?, 1/8?x 4?, 1/8? x 8?, 3/16? x 4?, 3/16? x 8?. Phillips: PH0 x 2-1/2?, PH1 x 3?, PH1 x 8?, PH2 x 4?, PH2 x 8?, PH3 x 6?, PH4 x 8?, PH2 x 1-3/8?. . Names