7-Piece 1/2 in. Drive 4 in. Triple Square Impact Socket Set Grey Pneumatic supplies the world's automotive, industrial, assembly, mining, maintenance, construction and energy industries with heavy-duty, high quality impact and specialty sockets. GP sockets and tools are made using the highest quality chrome-molybdenum alloy steel and state-of-the-art manufacturing process and equipment. Through and exact heat treatment, as well as rigid quality control, ensures the correct balance of strength and durability to deliver outstanding performance at the most competitive cost. . Used Volkswagen, Porsche, Audi, and also Detroit diesel engines Ideal for transmission plugs, undercarriage, differential, front axle, and caliper bolts Designed for professional tool users and made of high quality alloy steel Engineered specifically for use with impact tools High torque drive increases strength, makes it easier to access tight areas, and reduces wear . M5 4 in. Triple Square Impact Socket - 21054S M6 4 in. Triple Square Impact Socket - 21064S M8 4 in. Triple Square Impact Socket - 21084S M10 4 in. Triple Square Impact Socket - 21104S M12 4 in. Triple Square Impact Socket - 21124S M14 4 in. Triple Square Impact Socket - 21144S M16 4 in. Triple Square Impact Socket - 21164S Metal Clip Rail 1347S No -