I repurposed some old Tech Deck wheels with bearings : r/Fingerboards
Tech Deck Finger Board Tools Parts Wheels D. Way ATM Ladd Gallant PARTS LOT | eBay
Amazon.com: SPITBOARDS 34mm x 96mm Pro Fingerboard Set-Up (Complete) | Real Wood Deck | Pro Trucks with Lock-Nuts and Pro Bushings | Polyurethane Pro Wheels with Bearings | Logo (Green Version) :
Amazon.com: Teak Tuning Prolific Pre-Assembeld Complete Fingerboard with Prodigy Trucks, 32mm - Cloud Nine - Upgraded Components, Locknuts, Bearing Wheels - Pro Board Shape & Size : Toys & Games
Amazon.com: SAIKOOWA Glow Mini Finger Skateboards with Glitter Deck, Pro Fingerboard with Bearing Wheel and Foam Fingerboard Grip Tape 34mm x 102mm (Transparent Blue) : Toys & Games
Put bearings in some Tech Deck performance series wheels : r/Fingerboards
Tech Deck Finesse Performance Series Complete – Exodus Ride Shop
Tech Deck Expert Sk8, high concave, hard wheels, Complete Review (Repost) - Xi Jin for the win
4Pcs Finger Skateboard Accessory Tech Deck Bearing Wheel Modified Parts for Mini Finger Toy Model Roller Skate Scooter - AliExpress
Professional Wooden Finger Skateboard Complete Mini Fingerboard with Soft Pad and Bearing Wheels, Maple Finger Board Need to Assemble, Finger Toy for Kids and Fingerskateboard Fans - Walmart.com