IT COMES LOADED!!! The 16 gauge Pittsburgh Lock machine has 7 forming stations with 2 forming positions. One position forms the Pittsburgh Lock, while the outboard position has the ability of forming a number of other profiles, to include: Acme, Drive Cleat or 4 in 1 rolls (3/16” Right Angle Flange, 7/16” Right Angle Flange, Standing Seam and T-Connection. You don’t pay extra for the choice of opposing rolls, either. You get your choice of rolls opposite the Pittsburgh rolls.