This is a pocket hole jig for drilling accurate pocket holes. It works as well as the Kreg jig and uses the Kreg drill bit and screws. For most woodworkers this will last for years without the metal sleeve used in the Kreg jig. The first time you use it you will remove the excess plastic from the holes. 

The jig will probably work best if printed with PC but both PLA and PETC will work. Print with extra perimeters to get the extra strength.