I love my sidelock. Keeps my cutting line straight. I put mine on top of my ruler to keep my ruler from slipping

I use the Slidelock too. I use it for safety but it's excellent for non slip. I won't cut without one of them or a glove.

I found the price of them. $36.95 a set. One of DH's round saw blades cost triple that and I bet my set will last my lifetime. His blade maybe a year. LOL