4" Wheels for Shelving Units & Utility Carts

Set of four 4" diameter swivel wheels (two locking) Polyurethane wheels with steel hardware for heavy-duty use (4" diameter x 1" thick) ONLY compatible with 1" diameter shelving poles and SHE18304BZ utility carts Easy screw-in stem threader Weight capacity: 500 lb. NSF Certified to NSF/ANSI Standard 2 - Food Equipment for use in dry environments NOT compatible with: 0.75" diameter shelving poles/posts for model no. WEB930, WEB674, WEB675 1.0" diameter shelving poles/posts for model no. SHE24601B 1.5" diameter shelving poles/posts for model no. SHE99307ZB, SHE18308 Net Weight: 5 lb.