“made” isn’t quite right… I designed it and ordered prototypes from a machine shop. 11 were made, I still have two of them and I play both.
7075 aluminum, 8mm axle, C bearing (center trac), bead blasted and anodized.
You can read my entire yoyo design journey here: Yoyo CAD & Prototyping Adventures
(Plus some bonus journeys from other yoyo designers! Don’t miss out)