Easily remove the staplers needles and discard them with one hand. The unit is made of recycled ABS. External Dimensions (W x D x H): 5.3 x 5.5 x 0.5 inches (136 x 14 x 12 mm). Package Size: 1.6 x 0.5 x 5.5 inches (40 x 12 x 140 mm).