Concave Cutters – 4 – Kaneshin

#2 Best Seller in Concave Cutters


  • Brand
    • Kaneshin
  • No. 4
    • Length: 7 7/8″.
    • Blade Length: Just about 1″.
  • Concave Cutter with a rounded cutting edge.
  • Excellent for all sizes of bonsai material.
  • Cuts branches flush to the trunk.
  • Made in Japan.
Only 5 left in stock. Buy now! It will be roughly a month before this item becomes in stock again.
3 orders in last 30 days.
Eric from Houston, Stephen from San Diego & 1 other bought this item recently.
Purchase this product now and earn 156 points!
Kaneshin 4 Bonsai Concave Cutters
Concave Cutters – 4 – Kaneshin


Bonsai Concave Cutters

Bonsai Concave Cutters are the single most important tool for bonsai use and for which there is no substitute. These razor-sharp tools are designed for cutting branches flush to the trunk. The resulting wound can then heal over quickly with little scarring.

The cutting edge is rounded making these act as a concave cutter and a knob cutter in one tool.
These concave cutters have blades that are just about 1″ and have an overall length of 7 7/8″.

For basic usage and tips on how to care for your bonsai tools please visit this link. Bonsai Tools & How to Care for Them

Kaneshin Cutlery MFG was founded in 1919. That is over 100 years of history producing high-quality tools. Kaneshin bonsai tools are among the top in the world when it comes to durability, longevity, and quality. When you hold and use these tools, you will instantly notice a difference in quality compared to other brands.

Weight 8.9 oz
Dimensions 9 × 3 × 1 in

Customer Reviews

Based on 4 reviews
Gary Amrine
Great tool

I love the rounded edge on these cutters.. For me it eliminates the need for a knob cutter. Plus Sumo Bonsai has the best customer service I have ever dealt with. Thanks Jeramiah

John N Peeples Jr
Great service and quality

It’s a pleasure to do business with Sumo. The Kaneshin concave cutter is great quality and makes.a huge difference from the bypass trimmer I was using on my garden bonsais.

Stacy S.
Quality Products

There are not many retailers that carry the Kaneshin line of tools. These are high-quality tools for serious Bonsai enthusiasts. Thanks, Sumo Bonsai for making these available.

Prompt Delivery

Even though I live in Ontario, product delivery was quick. Thank you.

Order comments

Communication was excellent and shipping was fast. Thank you.

As advertised and quick

This company obviously cares about customer service. Fast ship, good communication.