SD Birthday Wishes - Designed by Sue Dix This set comprises of eleven stamps including birthday cake, cup cake, presents, birthday sentiments and more Stamp sizes range from 19mm x 13mm to 49mm x 63mm Permanently clear stamps Easy to align for precision stamping Sticky back for direct mounting onto acrylic blocks Can be used, stored and re-applied many times Use a damp cloth or baby wipe to clean the stamp For a thorough clean, use a clear stamp cleaner Clear stamps dislike lots of solvent based inks or sunshine