W098-PACK/AUTO is easy to install by simply attaching the casters to equipment using M8 Full Zinc Nuts and 30mm Pan Head Screws by using the appropriate fasteners, enabling firm mounting and consistent alignment. Heavy-duty construction: The casters in the kit are made from steel and rubber for long-lasting durability. This makes them ideal for use in a variety of demanding environments, such as warehouses, factories, and hospitals. Wide range of applications: The W098-PACK/AUTO Caster Kit can be used on a wide range of equipment and applications, including road cases, racking enclosures, mobile workstations, furniture, trolleys, carts, machinery, and much more. High load capacity: The casters in the kit can withstand a high load capacity of up to 440lb per wheel, making them ideal for heavy-duty applications that require reliable mobility and versatile carrying capacity. Excellent grip and traction: The casters feature blue rubber wheels that provide excellent grip and traction on a variety of different surfaces. This makes them ideal for use in both indoor and outdoor environments. Complete package: The W098-PACK/AUTO 4" Swivel Automatic Caster Kit is a complete package that includes everything you need to add flexibility and maneuverability to a wide range of equipment and applications. Pack includes: - 2 x W0990-AUTO 4" Swivel Automatic Caster with Rubber Blue Wheel - 2 x W0985-AUTO 4" Braked Swivel Automatic Caster with Rubber Blue Wheel - 16 x M8 FULL NUT ZINC - 16 x M8 Pan Head Screw 1 3/16" S1110 Our kits include two regular swivel casters and two braked swivel casters, ensuring optimal control and roll resistance. Features - Wheel diameter: 4" - Wheel width: 1.06" - Carrying weight per wheel: 440lb - Blue rubber wheel is non-marking and provides excellent grip and traction - Swivel plate allows for 360-degree rotation - Works with Castor Plate W0094 and universal wheel plate W8980