Metric. 15-piece set. With black ProGuard™ finish. Includes 1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10 mm. The ball side of these US made Protanium™ industrial high torque steel allen wrenches let you work in hard to reach places under a maximum angle of 25°. Comes complete with plastic holder.
