Description Machine Group 1 28 cut Diameter: 15 in Quantity: 1 Year: 2004 Model: SM8-TOP 2 Machine Group 2 28 cut Diameter: 13 in (2 machines) and 17 in (1 machine) Quantity: 3 Year: 2005 Model: SM8-TOP 2 Machine Group 3 28 cut Diameter: 17 in Quantity: 2 Year: 2015 Model: SM8-TOP 2 Machine Group 4 28 cut Diameter: 17 in (1 machine) and 19 in (1 machine) Quantity: 2 Year: Not specified Model: SM8-TOP 2