Finally, an easy to use cutting guide for 8 foot sheet material! No more messing with a chalk line and struggling to keep the circular saw from wandering when I'm ripping full size plywood sheets! This guide is the best, period. I love the "clamp from one end" feature. No C clamps are needed. The price is a little steep, but your paying for a precision piece. This tool takes the hassle out of big cutting jobs. The only problem I had was finding a place to store it (I hung it from the rafters in the garage with storage hooks). I just might have to get the 50 inch version as well. Thanks, Amazon!