I've used many types of spring clamps over my many years of WW...these Craftsman are about the best I've come across. Lightweight and strong, the pivoting clamping surface maintains even pressure on the project and as all spring clamps, are quick to apply and release. The polycarbonate construction means these won't rust and for each size, I find the clamping pressure above average from other manufacture products.
These are "Lighter Duty" clamps and their limitations should always be considered when in use. Given the great sale prices often found and using these as intended, they are about the best spring clamps on the market!
I bought these Craftsman 6 Piece Spring Clamp Assortment on sale, and so got them at a price I could not pass. The clamps consist of three pairs of 2-inch one-inch and 3/4-inch clamps. Six clamps total.
I have used them on several projects now and have found they do a good job holding things together. I particularly like the plastic jaws that do not mar the clamped surfaces. If I find them on sale again I will gladly buy another set.
One star off for being made in China and not the U.S.A.
From the smallest to the biggest clamp, each one holds fast. I used all of them to hold on my car cover through the wind and snow. I thought the small ones clamped to the door handles would come off, but the held fine.