Contains approx 20 transparent covers, 20 waxed circles, 20 rubber bands, 20 self adhesive labels. Essential kit for sealing and labelling home-made preserves. Pot the jam / preserve and cover with waxed disc while the preserve is still piping hot. When jam is fairly cold this should be topped with damped cellophane disc and secured with elastic band. The cellophane shrinks when dry to create a tight seal over the jar.