KIT-1553B Box+PCB, Black Handheld Soft Sided Plastic Box, with PR1553B PCB, Box = 4.6 x 3.1 x 1.0 in Box is black ABS plastic with soft gray side panels, secured with self tapping screws (included). Box Size 4.6 x 3.1 x 1.0 inches (117 x 79 x 24mm) Single-sided high-quality FR4 glass-epoxy circuit board, 1oz/ft2 copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible. 0.042" holes are drilled on 0.1" (2.54mm) centers. 4 mounting holes. Screws provided. PCB Size 2.80 x 4.27 in (71.1 x 108.5 mm)