Triangle key side of boom and padlock = 9 mm PG 309

Boom Triangle Wrench Side 9 mm PG 309 is an excellent tool for boom maintenance and adjustment. This high-quality triangle wrench is designed to provide excellent grip and precision for boom adjustment and maintenance tasks. Its 9 mm side provides a perfect fit for most boom models, and its durable construction ensures reliable and long-lasting use. The compact and ergonomic design makes the wrench comfortable to use and store.