These caster wheels include a custom fitted Delrin insert with a 1/8” key slot for power drive applications. The treads 1 1⁄2” wide and are are a soft 70 durometer rubber. The rims are polypropylene.
All wheels have rubber tread, nylon core, and are 2" wide.

4" NPC-PT314

1/2" bore
1/8" key
0.78 lbs

5" NPC-PT315

1/2" bore
1/8" key
1.1 lbs

6" NPC-PT316

1/2" bore
1/8" key
1.5 lbs

8" NPC-PT318

1/2" bore
1/8" key
2 lbs