Reddit reviews Schioppa GLEEF 412 TBE G L12 Series 4" x 1-1/4" Diameter Swivel Caster with Total Lock Brake, Non-Marking Thermoplastic Rubber Precision Ball Bearing Wheel, 3/8" Diameter x 1-1/2" Length Threaded Stem, 220 lb
We found 1 Reddit comments about Schioppa GLEEF 412 TBE G L12 Series 4" x 1-1/4" Diameter Swivel Caster with Total Lock Brake, Non-Marking Thermoplastic Rubber Precision Ball Bearing Wheel, 3/8" Diameter x 1-1/2" Length Threaded Stem, 220 lb. Here are the top ones, ranked by their Reddit score.
Swivel RacewayFeatures a 4 x 1-1/4" (100 x 32 mm) wheel that offers a wider tread than competitors for additional safety and stabilityCrown thread non-marking thermoplastic rubber precision ball bearing wheel designed for a quiet and smooth rollStem: 3/8-16 x 1-1/2"Total Lock Brake
Just a few thoughts:
http://www.amazon.com/Schioppa-412-NPE-Non-Marking-Polypropylene/dp/B00PS7QHU2/ref=sr_1_4?ie=UTF8&qid=1462928499&sr=8-4&keywords=cup+caster+lock
http://www.amazon.com/Schioppa-GLEEF-412-TBE-Thermoplastic/dp/B00PS7MY0Y/ref=sr_1_6?ie=UTF8&qid=1462928499&sr=8-6&keywords=cup+caster+lock
http://www.uline.com/Product/Detail/H-5244/Dollies/Leg-Dolly-1-1-4-Casters?pricode=WY576&gadtype=pla&id=H-5244&gclid=CKDeq_jo0MwCFVFlfgod3twFTA&gclsrc=aw.ds