The Micro 100 BBM 100950 Dimensions Projection Boring Bar is a top-notch tool for anyone in the industrial and scientific cutting tools business.Through trial and error, I found that this boring bar provides exceptional accuracy, minimal chatter, and low vibration during use. The bar's dimension projection is just right for drilling precise holes and countersinks. However it comes with a premium price tag. Despite that, it remains a reliable and durable choice for machining operations..