Uline H-3973, Casters for ESD Work Stools, 5 PackCondition:* New Surplus Stock, In OEM Packaging. As Pictured. Additional Notes:* Overall: 2″ x 1-3/4″ (Diameter x Width)* Mount Height: 2-1/8″* Stem: 1″ x 0.43″ (Length x Diameter)* Hub & Frame: Nylon* Stem Type: Friction Ring* Bearing Type: Plain* Dual Wheel* All Casters Swivel* 550Pounds per Kit (110 Poundsper Caster)* Meets Greenguard Gold CertificationUline H-3973