【Size】-- External Size of the project box : 3.5" x 2.8" x 1.1"(90 x 70 x 28mm)(L*W*H); Internal Size of the project box : 3.2" x 2.6" x 0.94"(82 x 65 x 24mm)(L*W*H)- - *Tips: in order to confirm the detailed installation dimensions, please refer to our detail image, which shows specific internal dimensions of the product.(Allowable Error: 2mm) 【Material】-- made of quality ABS plastic, durable/practical and sturdy, quality material and unique design always keeps your devices new and clean 【Fastening Clasp Design】-- Solid construction and compact design to protect against dust, corrosion, and clasp design keeps your electronic projects clean and safe. 【Wide Applications】-- Ideal for electronic projects, power supply enclosure, amplifiers box, etc. Especially suitable for portable projects and battery powered projects 【Quantity】: 5 pieces of electronic project boxes in total, adequate quantity for you to use Junction box