The 78240 Astro Pneumatic 10PC 1/2'' Drive Nano Pinless Universal Impact Sockets, SAE's pinless design allows a full 360° of freedom for the universal head to angle and rotate. The 78240 Astro Pneumatic 10PC 1/2'' Drive Nano Pinless Universal Impact Sockets, SAE also features a swivel hex design which transfers impact forces more efficiently and with greater durability.