They DO NOT come with everything you need to make them clampable. Since they have screw holes and are called "lever clamps," you'd think they'd give you what you need to actually clamp something. But no, you have to buy your own screws to attach it to something and turn it into a clip. I thought it was just a mistake so I got a second set but same problem - no screws. I will make sure I never buy PowerTech again as they clearly sacrifice quality for the price. I tried to save a few bucks but it ends up costing more since I have to buy my own screws.