Taper ground jig saw blades are made for fine cuts in solid wood, plywood and plastics. When cut quality is what you are looking for, these are the blades to use.
Choose the shank mount that matches your machine.
AO blades are 3/16" wide and sharpened to cut in both stroke directions
BR blades cut on the down stroke leaving a clean cut on the topside.
B blades cut on the upstroke leaving a clean cut on the bottom side.