The Spherical Knob Cutter is known in Japan as Kobu Kiri Hasami. These cutters are designed for removing trunk knobs and roots. The head is shaped like a ball, hence the name 'Spherical'. They produce a hollow circular cut that heals quickly and with a minimum of scarring.

The cutting edges of the Spherical Knob Cutters are rounded as compared to the straight blades of Standard Concave Cutters. The results are spherical cuts which are round and hollow and heal with the most aesthetic and least visible wounds.

RC-08S (Carbon Steel), and the RS-08S (Stainless-Steel) come with Spring assist for ease of use.

RC-08 SPHERICAL KNOB CUTTER Carbon Steel - 210mm

RC-09 SPHERICAL KNOB CUTTER Carbon Steel - 179mm

This Spherical Knob Cutter is smaller in size than the RC-08S - perfect for a smaller hand.

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RS-08S SPHERICAL KNOB CUTTER WITH SPRING ASSIST Stainless-Steel - 210mm

RS-09 SPHERICAL KNOB CUTTER Stainless-Steel - 179mm

This Spherical Knob Cutter is smaller in size than the RS-08S - perfect for a smaller hand.

RC-18 KNOB CUTTER 280mm

This Spherical Knob Cutter is Carbon Steel and similar to the RS-8 but larger, perfect size for larger stock. 280mm

RS-18 KNOB CUTTER STAINLESS-STEEL 280mm

This Stainless-Steel Spherical Knob Cutter is similar to the RC-08 but larger, perfect size for larger stock. 280mm