Key 4 254231-5

This is an authentic part which is sourced directly from the original equipment manufacturer for use with Makita rotary hammers. The key is secured in the opening of the cylinder liner helping to secure the drill holder. Over time it may wear out, get damaged or lost eventually requiring a replacement. Note, this high-quality key is made of durable metal and is sold individually. Check the diagrams for your model to ensure the exact location and the correct application of this component. A screwdriver will be needed to take apart and reassemble the housing when performing this repair.