Lopurs UV LOCA Liquid Optical Clear Adhesive Squeeze Sprayer Caulking Gun Tool The tool is used to help users to squeeze LOCA liquid optical clear adhesive fastly and smoothly The squeeze sprayer is made from plastic material step 1:Push the black handle to the front, then pull the rod to the back step 2:Put into a tube of UV LOCA with nozzles step 3:Promote the trigger to make the adhesive come out smoothly