- Premium heavy duty material: 4 inch spring clamps made with high quality nylon and a heavy duty steel spring. They are sturdy, non-slip and durable. The non-slip serrations inside ensure a strong grip, ideal for heavy duty tasks in woodworking or photo studios. - Ergonomic plastic handle design: Comfortable plastic handle with a non-slip texture provides a secure and ergonomic grip. The lightweight design enables one-handed operation, reducing fatigue during prolonged use. - Wide range of uses: Ideal for DIY projects, woodworking, photo studio backdrops, crafts and more. These multi-purpose clamps securely hold tarpaulins, fabrics, canvases and reflective boards, making them a versatile tool for home or professional use. - Precise voltage control: Designed with adjustable tension, these spring clamps provide precise control for sensitive surfaces. The non-marking PVC coated jaws protect materials from scratches and ensure a secure grip every time.