These WoodRiver Micro Quick Bar Clamp are ideal for woodworking, hobbies, crafts, model making and general-purpose clamping. With a throat depth of 1-1/2" and 50 lbs. of clamping force, these WoodRiver Micro Quick Bar Clamps can handle any light-duty project. The non-marring pads will securely hold even the most delicate project. Change to a spreader by unscrewing the fixed jaw and moving it to the other end of the rail, with the jaw facing away from the handle. Rail size is 7/64" x 5/16".About Us: Founded in Boston in 1928, Woodcraft's operations were moved to Parkersburg, West Virginia in 1989. It's been over 90 years since Woodcraft first began selling high quality woodworking tools and supplies out of a one room shop in Boston's North End, and Woodcraft is still firmly committed to providing woodworkers with superior products and expert advice. We are America’s leading supplier of saws, hand planes, power tools, hand tools, wood stain and finishes, routers, sanding supplies, wood, wood turning project kits, dust collection, and wood carving tools. We also offer a wide selection of woodworking plans, books and videos. Our family of brands includes WoodRiver, Highpoint, Woodcraft, Pinnacle and Woodcraft Magazine.