Brady 3470-1 34 Series Indoor Repositionable Numbers And Letters, 6 in, Number 1Brady 3470 1 34 Series Indoor Repositionable Numbers And Letters, 6 in, Number 1 Labels can be permanent or repositionable; once applied, numbers & letters are there to stay unless you want to change them. Made of B 498 plastic coated cloth with pressure sensitive adhesive that sticks to any clean, dry surface. Choose from 8 different label sizes to best suit your needs. All 34 series labels are black on yellow.