Use Knot-A-Bead Spacers to make Tin Cup Necklace designs with the Knot-A-Bead Tool. Slide the silk in between the foam and snug it up to your bead. Use the tool to tie a knot against the Spacer. You can also use the Spacers with the Beadalon Knotter Tool. Pack comes with two sizes to make Tin Cup Style Necklaces in either 12.7 mm (0.5 in) or 19.05 mm (0.75 in), spaces. Alternate both sizes in one necklace for a unique, custom design.