SR144 Ceramic ABEC-7 Bearing 1/8" x 1/4" x 5/64"inch 6308ZZE If you want a bearing

If you want a bearing that stays cleaner

A hollow shaft reduces weight without sacrificing too much strength and offers internal space for wiring

NBK Japan MJC-55CS-EBL 1 inch to 28mm Jaw-type Flexible Coupling

NBK Japan MJS-55CS-RD 15mm to 22mm

NBK Japan MJS-55CS-GR 16mm to 28mm Jaw-type Flexible Coupling

SR144 Ceramic ABEC-7 Bearing 1/8" x 1/4" x 5/64"inch 6308ZZE If you want a bearingSR144W1. 9 Ceramic Stainless Steel ABEC 7 Bearing Retainer : Torlon Hybrid Ceramic ABEC 7 Ball Bearing. Made of stainless steel and has Solid Si3N4 Ceramic balls. Cage is made from Torlon for lowest friction, long life and highest speed. SR144W1. 9 Ball Bearing Deep groove ball bearing Material: Stainless Steel Quality: ABEC 7 Closures: Open Balls: Si3N4 Ceramic (Silicon Nitride) Balls retainer: Torlon Speed: 400,000 RPM Size: 3. 175 x 6. 35 x 1. 9 mm