About this item Adjustable Corner Clamps -- With adjustable strong spring, the woodworking clamps fit for boards with a thickness of 3/16" - 3/4" (5-19mm) and 90 degree corner or T-joints, whatҳ more, the angle corner clip can be applied to assembly two board with different thickness High Quality Framing Clamps -- Not only for the 90-degree angle, T-joints, but also for the 45-degree saw. The 4 set clamps for woodworking are made of strong ABS plastic, so they are durable enough to use for a long time without damage One-Hand Operation --The woodworking clamps are easy to use. You can open this clamp with one hand, and the other hand is free for the workpiece, convenient and simple. The clamp will be a best gift for woodworkers, handymen and DIY''ers Multi-purpose Use -- The corner clips fit for different kind of works, especially wood crafting, such as craftwork alignment, drilling, carpentry, welding, tightening for making drawers, cabinets, square boxes and picture/photo frame reinforcement, furniture repair connections, wooden DIY projects, etc. The corner tool makes the challenge doable. 100% SATISFACTION -- The right angle clamps come with a 100% satisfaction purchase. If they don't work out for you for any reason, please feel free to contact us, we will offer you full refund or a new replacement