I used these sliders to build drawers for my 36 inch workbench. I wanted drawers that extended all the way from the back to the front and needed strong slides to make it work since the drawers would be holding lots of tools and shop supplies. These worked great! They are strong enough for me to be able to pull out the entire 36" length of the drawer with no hint of instability. They came with nuts and bolts for installation but since I installed them in wood, I used flat-head screws from the shop supply. The only issue I had was that it was difficult to insert the drawer slide into the frame slide and typically the first two ball bearings and holder got damaged but it didn't affect much except ease in insertion (I had to bend or remove the damaged piece of the bearing holder). Overall, a good product that I recommend.