Product Description Cold-drawn, carbon-steel spindles and swivel nuts. Acme thread for quick clamping. Large handles for comfort and torque. Oiled maple jaws. Size: 6" Wood, Hand screw clamp adjustable jaws for a strong grip or delicate for those small projects oiled wooden jaws won't damage or slip on your work piece Held together by Cold-Drawn, carbon-steel spindles & swivel nuts Acme thread for quick clamping metal parts are treated to resist rust, large handles for comfort & torque 6" Jaw length, 3" Clamping capacity 3" Throat depth, 0. 37 spindle diameter. From the Manufacturer Wood Handscrew Camp, 6" Jaw Length, 3" Throat Depth and 5/16" Spindle