The Radius Garden Ergonomic Garden Tools were designed based on research into human factors and tool usage. The results include hand tools with a patented natural-radius grip, which maximizes leverage while minimizing hand and wrist stress; and long-handled tools featuring a patented O-shaped grip, which have four times the surface of a regular flat handle, allowing the user to grasp with both hands. All made of either carbon or stainless steel and fiberglass handles/grips, the line of products include digging tools, circular rakes, grabbing tools, hand tools, and water garden tools.