Clamps hold metal, wood and plastic in place firmly, so you can complete construction and repair jobs with confidence. Grainger has the clamps you need for any woodworking, plumbing or electrical installation project. For example, a sturdy C-clamp is great for holding wood and metal tight for cement foundation jobs. Wood clamps are perfect for delicate woodworking projects, such as furniture or picture frame construction. A spring clamp is great for metal work jobs, such as welding or soldering, for more precise results.