I ordered a pattern with tool for the Mini Twister and I also ordered the kit with tool for the Itty Bitty Twister. The Mini is 3 1/2" and the Itty Bitty tool is 2 1/2" Can't wait to make the tiny one. I've done two with the Mini. I used a decorative stitch in the center of each pinwheel for the quilting.......was easy and quick.