This model has all the templates, bearings, and bits in metric. It is designed to work with 3.5" shank routers models such as Porter Cable 890, Dewalt 618, Skil,https://www.youtube.com/watch?v=_WcX05c4VtM and Mastercrafts. The package includes 15 mortise and tenon templates, 2 bearing followers, 2 endmills 1/2" shank bits, and a square fence. All the template sizes are shown in the photos. 20x40-Z16-D12 means the tenon size is 20mm by 40mm and is cut with 12mm bit and 16mm guide bearing. A screwdriver and metric Allen keys are needed for assembly and not included. Router not included. I ran out of clamps but do expect them in a couple of days. Please note Bosch 1617 and Porter cable 690 do not fit despite having a 3.5" shank.