Product Name: Single Flute Upcut End Mills for Acrylic Board Model Number: SF-550 Upcut, single flut
Product Name: Single Flute Downcut End Mills for Acrylic Board Model Number: SFDC-550 Downcut, left helix, single flute, uncoated
Product Name: Single Flute Sharp End Mills for Aluminum Model Number: SFAC-550 Single flute, for aluminum and acrylic, center cutting