Ingco G Clamp 4″ (100mm) HGC0104 Malleable Cast Iron

Our review

This is a 4-inch (100mm) G clamp from Ingco, the HGC0104, with a malleable cast iron body and a T-shaped thread. It is the sort of clamp a home woodworker, furniture repairer or small workshop reaches for when gluing joints, holding a workpiece to a bench, or pinning metal while drilling. Malleable cast iron matters here: it flexes under load rather than cracking the way cheaper brittle castings can, which is worth knowing if you tend to tighten clamps hard. The T-shaped thread gives you a handle you can spin quickly and then bear down on for final pressure. Before buying, check the throat depth and jaw opening you actually need, since a 4-inch clamp suits small to medium assemblies but will not span a thick tabletop glue-up. Compare it with other cast iron G clamps of the same size on jaw opening, thread smoothness and how the swivel pad sits, and consider whether a bar or F clamp would give you more reach for the same money. Available on Sokonia.