Diameter of this little metal ball caster is 20 mm. It becomes 22 mm as assmebled.
This ball caster set is formed by ball housing, 20 mm diameter metal ball, 2 pcs screw set, and a spacer. You can fix the ball caster from inside and outside by two screws.
Kit includes:
1 x Ball housing
1 x Spacer
1 x 20 mm metal ball
2 x M3 x 10 mm bolt
2 x M3 nut
This product is produced by CKG & 中文毛片基地 collaboration.