| W 638/1.5-2Z, Miniature ball bearing, Closure on both sides, 1.5 mm ID, 4 mm OD, 2 mm WD, Stainless steel Cage | 1.5 | 4 | 2 | | €17.49/piece |
| W 638/8 R-2Z, Miniature ball bearing, Closure on both sides, 8 mm ID, 16 mm OD, 6 mm WD, Stainless steel Cage | 8 | 16 | 6 | | €27.44/piece |
| W 638/5-2Z, Miniature ball bearing, Closure on both sides, 5 mm ID, 11 mm OD, 5 mm WD, Stainless steel Cage | 5 | 11 | 5 | | €20.28/piece |
| W 638/8-2Z, Miniature ball bearing, Closure on both sides, 8 mm ID, 16 mm OD, 6 mm WD, Stainless steel Cage | 8 | 16 | 6 | | €21.11/piece |
| W 638/3-2Z, Miniature ball bearing, Closure on both sides, 3 mm ID, 7 mm OD, 3 mm WD, Stainless steel Cage | 3 | 7 | 3 | | €13.65/piece |
| W 638/5 R-2Z, Miniature ball bearing, Closure on both sides, 5 mm ID, 11 mm OD, 5 mm WD, Stainless steel Cage | 5 | 11 | 5 | | €26.89/piece |
| W 638/2-2Z, Miniature ball bearing, Closure on both sides, 2 mm ID, 5 mm OD, 2.3 mm WD, Stainless steel Cage | 2 | 5 | 2.3 | | €13.65/piece |
| W 638/4 R-2Z, Miniature ball bearing, Closure on both sides, 4 mm ID, 9 mm OD, 4 mm WD, Stainless steel Cage | 4 | 9 | 4 | | €25.59/piece |
| W 638/2.5-2Z, Miniature ball bearing, Closure on both sides, 2.5 mm ID, 6 mm OD, 2.6 mm WD, Stainless steel Cage | 2.5 | 6 | 2.6 | | €18.84/piece |