6" x 3" Cast Iron Wheel Swivel P71 Caster - 2,500 Lbs Capacity v-groove-caster 300°F* Mounting Plate: 6-1/4" x

300°F* Mounting Plate: 6-1/4" x 7-1/2" V-Groove Width: 1-3/8" Bolt Hole Pattern: 4-1/2" x 6" to 4-1/8" x 6-1/8" V-Groove Depth: 11/16" Mounting Bolt Size: 1/2" or Smaller Link to Replacement Wheel:  Weight: 33 Lbs

5" x 2" Ductile Steel Wheel AR Rigid Caster - Part # 25AR12

387" Temp Range: -45˚F to 500˚F

it is perfectly fine to use it

Cast Iron wheels are one of the most popular metal wheels

6" x 3" Cast Iron Wheel Swivel P71 Caster - 2,500 Lbs Capacity v-groove-caster 300°F* Mounting Plate: 6-1/4" x6" x 3" Cast Iron Wheel Swivel Caster Part # P7106301121 Cast Iron is the standard metal wheel used by most unless a heavier capacity or greater impact strength metal wheel is needed. For applications requiring more capacity or impact strength, check out the ductile steel & forged steel wheel caster options. While cast iron is very strong, it is tough on floors and could lead to floor damage. For heavy duty floor protective wheels, be sure to check