High Vis Caps for Easy Size Selection. Knurled Nylon Handles Allow Controlled, Precise Driving. Sizes: Flat: 2mm x 3", 3mm x 4", 4mm x 6"; Phillips: #00 x 3", #0 x 4", #1 x 6". High Vis Caps for Easy Size Selection. Knurled Nylon Handles Allow Controlled, Precise Driving. Ideal for Repairing Eyeglasses, Watches, Computer, Precision Devices, etc 6 PC LONG PRECISION SCREWDRIVER