IRWIN Tools QUICK-GRIP Handi-Clamp, 4-Inch (1799213)

Seriously lacks holding power when compared to the previous gen of irwin's handiclamp. Save ur money and get the irwin 59400CD instead

They do the job tips fall off, but they’re are

These are better than spring clamps for my purpose. You do not struggle against a strong spring to get them into working position. You simply move them to the right opening and then squeeze to apply whatever clamping force you want. Also unlike many spring clamps, the jaw-pads swivel to meet the clamped surface squarely. The release works with relative ease, though you do need to orient it toward the palm of your hand to be able to use it. I will eventually use these clamps in woodworking, but I have an unusual application for now. When I put a book on a stand, this clamp will hold the pages flat to the cover so they do not pull back toward the closed position. It was not immediately apparent to me that the 2-inch designation was the opening for clamped material. I bought two of this size and should have bought one this size and the second smaller. When an open book has more pages on one side than the other, this clamp will always handle the larger side and the smaller would handle the side with less than half the pages. OK, I said my application was unusual!

These light duty clamps are great as a "third hand" for holding parts in alignment for subsequent final clamping with say screw type clamps. Overall the handi-grip is light and operates easily with one hand, smoothly loading and locking thanks to a fine pitch ratchet mechanism. Even though the handi-clamp frame members are all plastic the tool is ruggedly built and surprisingly rigid. However, the fine teeth on the metal ratchet mechanism can be overloaded if the average guy uses his full grip strength to achieve "extreme" gripping (clamping compression) loads. As well, if this is done there will be little clearance for your fingers to trip the ratchet unlatching lever between the tool's hand grips (i.e. a screw driver blade may be needed to trip the locking lever to unload the clamp). As an example In woodworking these Irwin handi-clamps will generally NOT develop the force needed on a caul to properly compress larger glue joints. In sum, don't expect that these light plastic handi-grips to be "Vise-Grip" or C-clamp substitutes -- they are not in that league. Again, this is a light tool to be used with one hand for quickly setting initial part alignment. Depending on your application, additional clamping tools may be required to assure satisfactory final clamping loads.

Dependendo do uso muito bom, o aperto nao achei ser muito forte.