Profile: Somma Tool Co., Inc. is a source for screw machine tooling. We manufacture a full line of tooling for screw machines. We offer preset & quick change tooling in addition to cutting tools, tool holders, work holders and accessories for screw machines, turret lathes & CNC lathes. Our product line includes broaching tools, endworking tools, turning tools, cutoff tooling, tap holder, reamer holders, knurling tools and taper shank tooling.