●【EASY INSTALLATION】 4 Inches Casters Set of 4 with side brake , 1-3/8 inch x 7/16 inch grip ring stem with 19/32" OD insert sleeves for quick and secure installation. ●【HEAVY DUTY REPLACEMENT CASTER WHEELS】4 inches diameter thermoplastic rubber stem caster, 175lbs load capacity per caster and 700lbs of four casters total. ●【QUIET & NO MARKS】Soft rubber treads with ball bearing swivel for super smooth and non-marking mobility. No scuff marks on the floor. ●【WIDE APPLICATIONS】Perfect replacement wheels for utility cart, Rubbermaid Libman mop bucket, Weber grill, shop vac, craftsman stool, dolly, workbenches, laundry cart, hospital bed etc. ●【ATTENTION】Please measure the diameter of your tube legs diameter before ordering in case of not fitting. Contact us freely if you have any questions or problems about our 4 inch stem caster wheels.