Sortimo Screw Clamp 160 8 In x 4 In x 1 In Model 6000002539Sortimo Screw Clamp 160 8 In x 4 In x 1 In Model 6000002539 You can fixate work pieces with the screw clamp 160. Due to its specific design you can insert the clamps into all perforations in the 20 mm system perforation of the WorkMo work tables and work tops. Furthermore they are compatible with the circumferential aluminium profile of the WorkMo perforated work table. (Pictures are similar, decorative material not included; shipping only within the