This is an 8 Oz. Can of Stix-It Covering Adhesive from Sig.

The perfect companion for any model airplane covering material. It has a super-strong heat activated adhesive built right in that keeps your covering material stuck down tight. Easy to use. Saves time. Superior adhesion. Allows economical covering materials to be ironed on. Keeps iron-on plastic and fabric coverings stuck down. Strengthens and seals the wood. Low weight, one thin brushed-on coat is all that is necessary. Cleans up with Sig Butyrate Dope Thinner. Compatible with all common model airplane paints.