AXL 3 Inch M6 Threaded Stem Casters (M6-1.0x25mm Metric), Polyurethane Inline Skate Swivel Wheels with Precision Bearings, Set of 4 (2 Locking), for Furniture, Shelf & Cart

[ATTENTION: CHECK SIZE BEFORE BUYING] This is a METRIC M6 (6mm) stem. The thread diameter is approximately 5.8mm - 6.0mm. It is NOT compatible with standard US 1/4" (6.35mm) or 5/16" (8mm) threaded inserts. If you are replacing wheels for US-brand wire shelving, please measure your current stem width to avoid returns. | [SAFE FOR ALL FLOORS & ULTRA QUIET]- Upgrade your equipment with premium Polyurethane (PU) inline skate-style wheels. Unlike cheap standard plastic, our high-grade PU casters glide silently and smoothly over hardwood, laminate, tile, and carpet without leaving scratches, smudges, or marks. No desk mat required! | [MULTIPURPOSE REPLACEMENT]- Revamp your space effortlessly. These M6 screw-in casters are the perfect upgrade for a wide variety of metric-threaded furniture, including kitchen storage racks, warehouse shelving, laptop tables, and rolling utility carts. (Note: Not suitable for standard 5/16" or grip ring stem office chairs). | [RELIABLE LOCKING MECHANISM]- This set of 4 includes 2 casters with robust, easy-to-step-on brakes and 2 without. The secure locking system firmly anchors your rolling carts, wire shelving units, or workstations in place, providing absolute stability and safety when you need your furniture to stay put. | [THREADED STEM FOR SECURE FIT & EASY SETUP]- Features a precision-engineered M6 x 25mm threaded stem for a secure fit that screws tightly into your furniture base, eliminating wobbling or loosening over time. Installation is effortlesssimply screw them in and tighten for an instant upgrade.