6" x 2" Ductile Steel V-Groove Wheel Kingpinless Swivel Brake Caster - 1,500 Lbs Capacity P7006301121 4" x 2" Cast lron

4" x 2" Cast lron V-Groove Wheel Swivel Caster - Part # 146VIRB420S

1" ID Roller Bearing Kit (No Spanner Bushing) for 2-1/2" Wide Wheels - Part # LBL2-1/2-1

while metal wheels are very strong and durable

): 550 Hub Length: 22mm (

Part Number for Optional 03 Plate Caster: Q503003STL Part Number for Optional 02 Plate Caster:  Q503002STL

6" x 2" Ductile Steel V-Groove Wheel Kingpinless Swivel Brake Caster - 1,500 Lbs Capacity P7006301121 4" x 2" Cast lron6" x 2" Ductile Steel V Groove Wheel Kingpinless Swivel Brake Caster Part # P51062DVRBTLB Ductile V Groove wheels are designed to guide equipment along inverted angle iron tracks but can also function without a track due to the tread on both sides of the V groove. Made from a combination of alloys that provide excellent tensile strength, these wheels come with extra thick treads, hubs & walls. Ductile steel is a step up from cast iron, offering higher