Jagwire Needle Driver

This tool is designed for standard 5mm hydraulic hoses. While it works with most common mountain and road bike hydraulic systems, it is best suited for standard barb-and-olive setups.

Installing a barb by hand or with pliers often leads to crushed hose ends or uneven seating, which can cause leaks. This tool holds the hose securely in place, allowing you to press the barb in straight and flush without damaging the hose material.

Yes, this specific package includes two inline adjusters designed for 5mm housing. These are separate from the needle driver tool and are used to fine-tune cable tension for mechanical brakes or derailleurs.

Yes, as long as your system uses standard 5mm hydraulic housing, this tool will provide the necessary stability for barb insertion regardless of whether it is a road or mountain bike setup.

Absolutely. The primary function of the needle driver is to clamp the hose firmly, which eliminates the slippage that typically occurs when trying to force a barb into a slick hydraulic line.