Use rubber or nylon bonded.
The edges of even wide steel wheels will impart very small cracks over time when moving the wheels due to steering motions.
That then is the start of bigger cracks and gouges.
Best to avoid it all together even if after 5 years you need to replace the wheels again.
McMaster Carr has about the best selection of wheels and rollers you will find.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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