Outer ring Bi-Metal Design, Raw Titanium body with Stainless Steel rings.
Given that Droid is to be a SE yo-yo, it is critical to have an outer ring design instead of an inner ring. The titanium yo-yo body of Droid (without the outer rings) measures at a smaller and hence safer 54 mm, allowing the yo-yo to be machined more consistently. The outer rings makesup the rest of the 57 mm diameter for Droid. Given Droid's bimetal design, it has significantly more rim weight and torque.
Specs:
Weight: 64g/2.26oz with One Drop energy dome Side Effects (included)
Width: 44mm/
Diameter: 57mm/
Gap: 4.4mm/
Body Material: Titanium
Ring Material: Stainless Steel
Bearing: YoYoRecreation NSK Platinum Double Straight C Bearing
Response: RSO 19mm Type 40 Landing Pads