Universal Helicopter Blocks, Aluminum

DDIN universal helicopter block. 16″ stringing arm is easily attached or removed with locking detent pins. DDIN Universal Stringing Blocks are low maintenance, versatile, and built for longevity making them a trustworthy option for your job. Designed to withstand tough conditions, these blocks feature a high-strength aluminum alloy frame and heavy-duty sealed ball bearings packed with synthetic aviation grease.