The 500 Series Helicopter Stringing Blocks are suitable for stringing overhead single conductors and earthwire using helicopter construction techniques. All blocks incorporate a spring loaded side gate for easy installation of the pulling rope and retention on the conductor in the sheave during the stringing operation.

• Nylon sheave with ball bearings.
• Compact steel frame.
• Crosshead and type ‘B’ socket for suspension.
• Lightweight construction.