Constructed of lightweight resin with a heavy-duty spring. Ideal for firmly gripping flat or odd-shaped worksurfaces. Jaws pivot for secure, even gripping. Ergonomically shaped handles are designed for comfort and ease of operation. Includes two each of 1", 2" and 3" clamps. Opening Size: 1 in, 2 in, 3 in; Pre-Consumer Recycled Content Percent: 0 %; Post-Consumer Recycled Content Percent: 0.00 %; Total Recycled Content Percent: 0.00 %.