Built of the highest quality materials. Made of special tool steel, with excellent resistance to degradation as a result of intensive and continuous use. Made of: 1/4 heads with diameter: 4-4.5-5-5.5-6 -7-8-9-10 -11-12-13-14 mm, extension 1/4"", 75 mm, tip, Pz 1-2-3, Ph. 1-2-3, hex. 3- 4 -5-6-7 mm, Torx 10-15-20-25-27-30-40, std 4-5-6-7 mm. Rubber handle, absorbs stress even in the most demanding jobs. Ideal for professionals in the field of mechanical repair and assembly.