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GR Pro Secateurs / Niwaki

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The GR Pro is Niwaki's best-selling secateur, hand-forged in Yamagata in northern Japan and built around Japanese steel rather than convenience. The blade is KA70 carbon steel, which takes and holds a notably keen edge but will stain and eventually rust without care, the trade most Japanese cutting tools make for sharpness. It is a bypass secateur with a strong spring, a chunky safety catch at the base that flicks closed one-handed, and removable yellow vinyl grips, the detail that gives the 'double yellows' their name and makes them easy to find in a border. The grips pull off for a plainer look. It suits gardeners who will clean, oil and sharpen a tool in exchange for an edge ordinary stainless secateurs cannot match.

Design intent

Choosing KA70 carbon steel over stainless is the defining decision: it buys a harder, sharper, longer-holding edge in exchange for maintenance, which is the priority a working tool is built around.
The bright yellow grips and base-mounted safety catch are practical choices, making the tool visible when dropped in foliage and lockable with one hand without setting it down.

Trade-offs

Carbon steel stains and rusts if left wet or dirty and is more brittle than stainless, so it chips if used on wire, stone or thick knotted wood.
It is a precision pruning tool, not a lopper: cutting beyond its rated diameter strains the blade and the joint and is better handed to a saw.