Mini ball bearings

Mini ball bearings, metrical-stainless-steel .The most remarkable features of all our ball bearings are their easy running, their long life, the low sound level and the equipment of covering discs on both sides against dirtying (* = without covering discs). They all correspond to international standards and can therefore be changed against other models. Sizes: 
d = 1.0 mm, D = 3.0 mm, B = 1.0 mm (*) - DDL310 
d = 1.5 mm, D = 4.0 mm, B = 2.0 mm     - DDL415ZZ
d = 2.0 mm, D = 5.0 mm, B = 2.3 mm     - DDL520ZZ 
d = 3.0 mm, D = 7.0 mm, B = 3.0 mm     - DDL730ZZ
d = 4.0 mm, D = 7.0 mm, B = 2.5 mm     - DDL740ZZ
d = 6.0 mm, D = 10.0 mm, B = 3.0 mm   - DDL1060ZZ
d = 8.0 mm, D = 12.0 mm, B = 3.5 mm   - DDL1280ZZ