The Grind Machine was the first release in YoYoFactory's "Redline Series". Their first model without FAST response included. This a high tech aluminum model with hybrid construction. Plastic lens caps and printed logo inserts. This model used YoYoFactory response stickers, with several types provided.
There were two runs of this model. The one pictured here is from the first run of 120. The green anodize is a darker green on the first release. The second run is a lighter more teal green. Also, the first release did not include the YoYoFactory "Gap Gadget Technology" That text appears on the logo of the second run.
