4Pcs 1/2" Stainless Steel Roller Ball Transfer Bearings, 88 lbs Screw Mounted Round Ball Transfer Units Universal Rotation Ball Casters;

Specification:

Material: Stainless Steel
Size: 4.8*3.1cm/1.89*1.22inch
Color: Silver
Each Loading Capacity: 88lbs/40kg

Package Included: 4 x Ball Transfer Unit