4" x 2" Kingpinless Swivel Caster Set of 4 - Semi Steel Gray Iron Wheel - 2,800 lbs Capacity Per Set of 4

4" x 2" Kingpinless Swivel Caster Set of 4 - Semi Steel Gray Iron Wheel - 2,800 lbs Capacity Per Set of 4CasterHQ's 40 Series Casters are hot forged ASTM 1045 steel kingpinless casters that can withstand up to 2,000 lbs per yoke. Whether it's machinery, military, fabrication, tow-lines or automotive equipment, the 40 series will deliver. Combined with our Semi-Steel Wheels also known as Gray Iron Wheels which can with stand up to 1,400 lbs per wheel, these wheels are economical for any application. Our semi-steel wheels are precisely machined with a tensile strength of 30,000 PSI and can withstand temperatures from -40F to 600F. Semi Steel wheels come in different hub designs depending on the size of the wheel selected. Photos will match the hub design you order. If you have a special hub design such as a solid core, solid 3 spoke, solid 4 spoke, open 4 spoke, solid 5 spoke, 5 spokes, solid 6 spokes, or open 6 spokes, give us a call and we will let you know our inventory levels and the diameters available with your wheel design request. The hardness of these wheels are on a Brinell scale of 145.