Hamilton Versa-Tech® Gray Rubber (65A) on Thermoplastic  Wheel 4" Diameter x 1 1/4" Wide x 1 5/8" Hub Length with 1/2" Non-Precision Ball Bearing
Bearing Size: 1/2
Center Design: Solid
Wheel Color: Light gray rubber on gray center
Diameter: 4
Diameter M: 0
Diameter P: 0
DIM R: 0
Face K: 0
Face S: 0
Hub Diameter: 0
Hub Length: 1.63
Length H: 0
Wheel Face: 1.25