You must already have an eyelet setter for a 3/16th eyelet. Unfortunately, each eyelet size will require its own setter. Note from CSOS: Eyelets are a one piece hardware and grommets are 2 pieces. Eyelets hold onto the leather and line a hole for laces by the post end curling around the leather edge on the back side. Grommets are set with a different setter and have a washer on the back for a sturdier hold on light weight leathers or canvas.