Use SewTitesTM Dots when working on small EPP projects, wool applique, and more! The magnets in our Dots are extremely powerful and will hold very thick projects together – they're our most powerful magnet and since there is only one on the Dots, work well for when you want to move around the magnet somewhat while working. To use, simply slide the magnet apart, align with the pieces you need to sew together, snap on the SewTites, and sew! No more hand fatigue. No more working around clips and pins. No more moving clips and pins. SewTites Dots Dimensions: .67" (17mm) diameter.