The Steelman Pro Pinless Swivel Impact Extensions get into hard to reach spaces where maximum power is needed. According to the company, the pinless joint design transfers more usable torque fasteners than a universal joint design and provides safety from projectiles that universal joint designs can create upon failure. A 1/2” female to 3/8” male drive design permits more accessibility to hard reach spaces such as exhaust manifolds and bell housings. The 30-degree swiveling heads provide flexibility, allowing a wide range of applications. The Pinless Swivel Impact Extensions are available as 3-pc set (No. 79989) with 6”, 9”, and 12” sizes, and also offered individually in 18” (No. 79993), 24” (No. 79994) and 36” (No. 79995) lengths.