DuraTrax screwdriver is durable, magnetized, heat-treated, Black tip tops off the precision ground Chrome Vanadium steel shaft. Comfortable handles are made of polypropylene, with a rubberized finish that enables modelers to get a firm grip. Top of handle has a hexagonal design to keep it from rolling away when laid on a work surface. Ideal for tuning/adjusting High- /Low-Speed needle valves and throttle stop screws on glow powered radio controlled engines. Shrinkwrapped to a header card that hangs easily from a pegboard and is labeled for quick identification.