This model is designed for knot tying training in deep holes.
There are the two sizes of acrylic cylinders, you can practice two different width and height of holes.
The transparent cylinder and two colored string help you to observe your knot clearly.

ModelS-KTD-01Skills1. Deep hole knot tying skills2. Various knot tying skillsFeatures1. Two colored string2. Transparent cylinderSpec+Two Colored String x 1ea- 720mm / 7.5gBoard With Cylinder With Hook x 1ea- 320mm*170mm*150mm / 883.5g