Aluminum alloy construction with knurled bodies. Mini sized with pocket clip. Magnetic tip in handle. 1/8″ hex drive mini bits store in handles. BLUE driver features fractional and metric hex bits (5/64″, 3/32″, 1/8″, 5/32″, 2.5mm, 3mm, and 4mm), GREEN features star bits (T6, T7, T8, T9, T10, T15, and T20) and RED has slotted (1/16″, 5/64″, 3/32″, 1/8″) and Phillips (#000, #00, #0).