Surebonder 12-Pack 4" Clear Glue Sticks are superior bonding high temperature glue sticks for difficult surfaces such as metal, glass, ceramic & plastic. High temperature. 12 sticks 7/16" x 4" per pack. SUREBONDER's BS-12 high temperature best glue sticks are the best solution for bonding to difficult to bond surfaces. These glue sticks offer superior bonding for hard to bond surfaces.