I have purchased mine from JoAnns. They are pricey, but I like the curve and just used them on a king quilt. None came undone and my back is as good as my front. I did buy them with a 50% off coupon, tho. Mine are by Dritz Quilting, size 2 and are 1 1/2 inch. Package said 75 Curved Brass Basting Pins.