About

About GWY, LLC Since 1975, GWY has been a global leader specializing in the sales, rental, repair, and calibration of installation tools for structural bolts. Our Turn-of-Nut wrench series are custom designed in partnership with the global leader in electric tool companies, Tone. Using our years of experience in bolt fastening with TONE's years of quality wrench manufacturing, we have created a wrench that meets the high standards of the federal government for structural fastening. Other product lines include the popular shear wrenches for TC bolts, torque wrenches, bolt tension calibrators, rebar tying tools, and hydraulic products.