Bostik B183836 Blu Tack - White Blue Tack Bostik Mastic Adhesive Non-toxic White. The Blue Tack is Clean, reusable mastic adhesive with a multitude of uses. Ideal for sticking up maps, charts etc., or holding telephones, calculators etc. firmly to desks. Bostik 801103 Blu Tack Handy Bostik Handy Blu Tack The original re-usable adhesive. Clean, safe and easy to use. Provides an ideal alternative to drawing pins and sticky tape. Holds up; posters, cards party decorations, maps, messages. Holds down : telephones and calculators to desks, ornaments etc. The original No.1 reusable adhesive. Holds up, holds down, holds safe almost anything. Handy 60g.