Based on my observations, these carbon brushes are a great addition to my collection of power tool parts and accessories. They are well-made and function smoothly with my power tool. The price is also reasonable, making them a cost-effective choice for any DIY enthusiast. However, there were no installation instructions included, which may be a challenge for NOVICE DIYers. Overall, a good purchase for anyone who likes to do their own home improvement projects..See full review