Outer Diameter - 4mm

304 Stainless Steel Compression Springs Set , 4mm OD, 0.4mm Wire, 10mm Free Length, Silver Tone, Durable Small Parts Pack of 10 for Electronics, DIY Projects, Machinery, and Hobbies, Corrosion Resistant

1.55x 4x 2.5mm Ball Bearing - Shielded - Miniature

SMR104C-YZZ ABEC-5 Dry Stainless Steel Hybrid Ceramic Shielded Ball Bearing 4x10x4mm

1.5x4x1.35 Bearing Open Miniature

1.5x4x2mm Ball Bearing - Shielded - Miniature

L-415 Miniature Bearing 1.5mm x 4mm x 1.2mm

SMR681X Stainless Steel Ball Bearing ID 1.5mm OD 4mm Width 1.2mm

SMR681X-ZZ Stainless Steel Ball Bearing ID 1.5mm OD 4mm Width 2mm

R-410 1mm x 4mm x 1.6mm Miniature Bearing

R-412 Micro Ball Bearing 1.2mm x 4mm x 1.8mm

ML1204 1.2mm x 4mm x 1.8mm Miniature Ball Bearing

MR41X 1.2mm x 4mm x 1.8mm Miniature Ball Bearing

68/1.5 Miniature Bearing 1.5mm x 4mm x 1.2mm

681X Bearing 1.5mm Bore Diameter 1.5mm x 4mm x 1.2mm

MR681X-ZZ Micro Ball Bearing ID 1.5mm OD 4mm Width 2mm Shielded

MR681X Micro Ball Bearing ID 1.5mm OD 4mm Width 1.2mm

691 Bearing Open 1x4x1.6mm Miniature Micro Ball Bearing

F681XZZ Flanged Shielded Bearing 1.5x4x2 Miniature

10-Pack 1.5x4x2 Metal Shielded Miniature Bearing

10-Pack 1.5x4x2 Metric Shielded Miniature Bearing

4" inch Lazy Susan Bearing Turntable Hardware - 300 lbs Capacity