B=1/4 inch. B=6.3mm. Binnenmaat=1/8 inch. Dikte=7/64 inch. Bearing Code=R144-ZZ

OD=1/2 inch. OD=12.7mm. ID=3/16 inch. Dikte=3/16 inch.

B=3/16 inch. B=4.8mm. Binnenmaat=3/32 inch. Binnenmaat=2.38mm. Dikte=3/32 inch. Dikte=2.38mm.