Abstract: A trigger-operated staple tacking device comprises a body and an operating handle pivotally connected at one end to the body, operation of the trigger to actute a staple driving mechanism of the device being effected by squeezing the other end of the handle and the body together against the action of a return spring operative to return the handle to a position projecting from the body. The body has a recess to receive the handle when the device is not in use, a movable catch on the handle co-operating with a clip on the body to hold the handle in the recess. The staple driving mechanism comprises a linearly movable staple driving blade and resilient means extending transversely of the path of movement of the blade and biasing the blade towards a staple ejection slot, the blade being movable by the trigger out of the staple ejection slot against the action of the resilient means whereby the blade is driven to eject a staple upon release of the blade by the trigger.