Nice set of guides. Took once or twice to get the feel for how it locks (has a few locking positions depends on the width of the stock) but they work great. I can't believe I waited so long to get this type of tool; makes circular saw cuts straight and true. I'll never go back to cutting without them.

Great tool. Got the 3 pack. Used it right out of the box. Sure beats having to hassle with adjusting clamps and a straight edge to mark a straight line or using a chalk line. Also works great with router accessory. Not really a complaint, but difficult to get a good clap on real narrow pieces of wood. Otherwise 5 stars. Early days yet as to longevity, but am hopeful for a long life of use.

These are phenomenally useful as router guides. You do need to be careful to set them square to the workpiece with a known, accurate square. Be sure to read and master the method for unlocking and setting the sliding end of the clamp.

The clamps do not really hold well. I've tried all different ways of securing the track to the wood but it comes off with very little effort. Once coming off while I was using it to make a cut. Not very pleased ay all for the money.

Was excited to get them and when they arrived one didn't even work. Used the other two over the weekend and on several occasions the plastic clamps slid on the shaft. The longer of the three clamps after clamping on a 48" piece showed slight flexing in the middle and for what I do this is not acceptable straight cuts are crucial. For the weekend DIY you should be okay if they all come working, but for someone who depends on their tools on a daily basis I would look for a more sturdier clamp set. They are a good idea but the manufacturer needs to remove the plastic parts and develop a more sturdier clamp system. I do however like frame setup and am going to remove the clamping system and use them for a straight edge and clamp them with my kreg clamps when I need to rip.