MRC Ball & Roller Bearings R4ZZ ABEC1 20000
(7) R4-ZZ Premium Metal Shield Ball Bearing C3, 1/4″x5/8″x0.196″, R4z • Set of 7 bearings • Model: R4ZZ ABEC1 • Original box included • Use in machinery or skateboards • Vintage item from USA Bearing diameter = 0.5 inches.