The heavy service casters are the toughest casters you can buy in the 2" wide wheel class because of their premium drop forged steel construction. Hamilton heavy service rigid caster with 8" x 2" plastex phenolic wheel with 3/4" straight roller bearing. Bolt hole 1: 3-3/8" x 5-1/4". Bolt hole 2: 2-3/8" x 4-15/16. Bolt size: 0.5". Caster rig type: forged steel. Swivel or rigid caster: rigid. Caster color/finish: crimson red. Wheel color/finish: black. Wheel diameter: 8". Load capacity (lbs.): 1400. Overall height: 9-3/4". Top plate measures: 6-1/2" length by 4-1/2" width. Wheel face: 2". Wheel type: plastex. Plastic material. High rolling ease, high relative capacity. No quiet operations, poor floor protection. Low cushioning (resilience), medium impact resistance. Low moisture resistance, medium abrasion resistance. Low relative cost. -50 Degrees F low temperature range. 300 Degrees F high temperature range. Poor chemical resistant.