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This glue can be used two ways. Use it when its blue and wet for a permanent bond or let it dry clear for a few moments to get a temporary bond. This package contains one 5-1/2-inch long 2 way glue squeeze and roll pen with a fine ball point tip. Photo safe and acid free. Conforms to ASTM D4236 standard. Xylene free water based glue. Tip size fine ball point 1-mm line.