This stop allows to stall the saw during cutting. Nevertheless, I recommend are used on large boards unless you have a good vibration damping system. The stop is with only one attack is not very effective, it moves on almost 2mm regardless of how it is clamped in and is therefore obliged to support (apart or closer and maintain the saw pressure) to maintain a good distance coupant.On also regrets the lack of numbers on the scales, one is forced to use a meter to measure what is not the most convenient. At first glance, this stop can cut up to 20cm.