Benchmark® weight bags contain copper-coated lead shot sealed into polyethylene tubing which is then covered with an unbleached, unsized, soft cotton "sock". They are made in a flexible, loosely packed snake shape for many uses including book repair & flattening paper or textiles. Thin bags may also be placed inside fragile vessels to help stabilize them while on display.
Hollinger Metal Edge Inc
9401 Northeast Dr.
Fredericksburg, VA 22408
Phone: 800-634-0491
Phone: 540-898-7300
Fax: 800-947-8814