Check the listing for details. SpeedTek RC Metric Hex Driver Set (4) (1.5mm, 2.0mm, 2.5mm, 3.0mm). Color: Red, Condition: New. Listed at 16.99 USD. The SpeedTek RC Metric Hex Driver Set features large 20mm diameter handles with machined relief holes and cross hatch knurling to reduce weight and provide a high grip surface. The end of the handle features a rotating end cap that allows the tool to spin in your palm, maximizing comfort during long wrench sessions.SpeedTek RC tools also feature proven HSS steel tips. These tips are precision cut to create an exceptional fit with the fastener, and will continue to hold their edge throughout repeated use. The 80mm long tip is secured in the handle with an M3 set screw, and a full range of replacement tips are available so they are easily replaced if needed.SpeedTek RC has raised the bar again, with investment grade tools that will outlast the life of the model you are working on…and remain with you for years after. Grab a set and see why our tools are used and trusted by professionals and weekend warriors around the world.