Abstract: A glue injector for injecting glue under high pressure is described that comprises a barrel (2), a plunger (3) that is received within the barrel and extends rearwardly through an aperture (19) in the body (4) of a handle which carries a pair of opposed finger grips (5, 6). The finger grips are located at the rear portion of the barrel and laterally of the barrel and are elongated so as to each accommodate two fingers. The plunger (3) comprises a shaft (12), a piston (13) at its front end and a head (14) at its back end. The piston includes a resilient disc, washer and bolt. The bolt is threadedly attached to the front end of the piston to provide with the resilient disc and washer a tight seal. The barrel has a tapered nozzle attached to its front end. The tapered nozzle is threadedly attached to the front end of the glue injector barrel.