Lezyne

External BB Tool For 3/8" Socket Driver

The Lezyne External BB Tool for 3/8" Socket Driver delivers shop-quality precision for bottom bracket installation and removal. Built from heat-treated, CNC-machined steel, it provides an exact fit that protects both the tool and the component from wear. Designed for professional mechanics and dedicated home builders alike, this tool ensures a secure and stable interface when working on most external bottom bracket systems.

It pairs perfectly with a 3/8" socket driver, adjustable wrench, or Lezyne’s own 32mm CNC Rod (LZ-9400), allowing flexibility in the workshop or on the road. The durable steel construction and precise machining make it a long-lasting addition to any mechanic’s toolkit.

Key Features:

• Precision CNC-machined heat-treated steel for long-term durability
• Compatible with most external bottom bracket systems
• Works with 3/8" socket driver, adjustable wrench, or 32mm CNC Rod
• Shop-quality build ensures accurate engagement and smooth operation
• Compact 56mm design fits easily into any tool collection