Abstract: A caulk gun has a cartridge-carrying body with a fixed handle and a pivoting handle depending therefrom, the pivoting handle being coupled to a plunger for axial movement thereof to dispense material from the cartridge in response to movement of the pivoting handle toward the fixed handle. The pivoting handle has a proximal end portion which diverges from the fixed handle to an index finger engaging portion and a distal end portion which is curved toward the fixed handle in the normal rest configuration of the gun, such that the pivoting handle, at both its distal end portion and its index finger engaging portion is spaced from the fixed handle generally the same distance. The fixed handle has a widened portion intermediate the ends thereof.

Abstract: The one-piece, open-end wrenching head includes two substantially equal-length jaws with a throat recess therebetween. The jaws respectively include driving surfaces spaced apart a distance slightly greater than the across-flats dimension of an associated hexagonal fastener, with each driving surface having a length no greater than the length of one of the flat sides of the associated fastener and having a serrated region thereon. The distance from the deepest part of the throat to an imaginary line connecting the distal ends of the jaws is approximately 0.86 times the across-flats dimension of the fastener.