High-Speed Practice Device Bowling Ball Release Practice Board Type

This device is for bowlers who aspire to achieve high rotation, allowing them to practice and check the hand motion during release and the ball's rotation.

As some of you may know, a certain manufacturer's product is difficult to obtain and very expensive... so I've created a (nearly) identical functional item myself.
This can mainly be used for practice at home!

- Colors:
Black, White, Green, Red, Yellow, Blue
Please choose one color.

This product is a new model with a lightweight new design, made possible by the introduction of a new 3D printer!

The rollers are industrial-grade with a load capacity of 30kg, and this model uses 7 steel-type rollers that rotate smoothly.
It spins very well.

Please feel free to comment if you have any questions!

Thank you for your consideration!