This 4" x 2" solid polyurethane premium heavy duty swivel caster with tread brake is easy to roll and features our high-capacity blue K-Wheel which is superseding the green XI wheel due to its superior performance. The solid K-Wheel is molded from a high-strength urethane compound, providing better rebound and debris rejection than the previous XI wheel for enhanced versatility, floor protection, and life expectancy–along with being quieter. The 1-piece solid construction also prevents any possibility of tread separation in wet applications and the wheel is resistant to most chemicals. Our 44 Series casters are our most popular 2-inch wide industrial mobility solution featuring 1/4” thick USA-made rigs with standard 4” x 4.5” overall top plates. Zinc plating provides an attractive finish which increases corrosion resistance and provides longer caster life. 44 Series casters feature a 3-year warranty and are RoHS compliant. Please note CAD models may show the green XI wheel which is being replaced by the better-performing blue K-Wheel.