⬛Fast & Efficient Overhead Fastening: Aluminum Hollow Sockets are designed to accelerate overhead fastening work by reducing time-spent hand threading fasteners over threaded rod.
⬛Secure Grip with Aluminum Sleeve: Special aluminum sleeve can be held all shaft stable and more safety. 
⬛Extended Reach for Deep or Overhead Nuts: The hollow shafts allow long bolts and threaded rod to pass through in fastening applications while the increased socket lengths provide better access to nuts located in high places in ceiling or ductwork.
⬛Heavy-Duty Hex Shank for Impact Tools: The hex shank is Cr-Mo one-piece millings for durability and drops readily into an impact driver or driver-drill for convenient, automated fastening.
⬛Application: Ventilation, Construction, Decoration, Ceiling, etc...