500pcs/lot U624ZZ 624UU SZU4-13 4x13x7mm U groove ball bearing miniature with u-shaped slot 4*13*7mm

500pcs/lot U624ZZ 624UU SZU4-13 4x13x7mm U groove ball bearing miniature with u-shaped slot 4*13*7mm

Brandnan
Description
500pcs U624ZZ 624UU 4x13x7mm U deep groove ball bearing walking guide rail for 3d printer
£0.24