The gun features a threaded side insert that accepts a grease cartridge, so you simply screw in a full cartridge and pump the handle to push grease through the precision nozzle. Point the nozzle into the bearing race or fitting, apply steady, even pressure, and stop once fresh grease begins to show at the edges, which tells you the cavity is full. Wipe away any excess with a clean rag before reassembling the part.

The threaded insert is sized for a standard small grease cartridge, and most bicycle-specific greases such as lithium or synthetic bearing grease sold in matching cartridges will work fine. If you already have loose grease, it can usually be hand-packed into an empty cartridge before loading it into the gun. It is best to use grease meant for bicycle bearings rather than heavy automotive grease, since bike bearings run at lighter loads and finer tolerances.

This is one of the easiest tools for a home mechanic to start with, since there is no calibration or special technique involved. Anyone comfortable with a basic Allen key set can use it to grease their headset, bottom bracket or pedal threads at home, cutting down on trips to the bike shop for routine servicing.

For regular riders in Indian conditions, with dust, monsoon humidity and the occasional slush crossing, it is good practice to check and re-grease headsets and bottom brackets every few months, or right after a wet ride. Pedal threads and seatpost interfaces also benefit from a fresh coat of grease each time they are removed for maintenance.

The precision metal nozzle is built to direct grease flow cleanly to the fitting point without much mess, provided the cartridge is seated properly and the pump is worked with steady, even strokes. Wiping the nozzle tip after each use and storing the gun with the nozzle capped helps keep it from clogging between uses.

Yes, this is a genuine LeBycle product sold directly through DoGoodCo, built with a durable metal body designed for repeated home workshop use. If you receive a damaged or defective unit, our customer support team will assist with a replacement as per store policy, so you can order with confidence.