Each unit has 8 components. 32 magnets, 4 x M3 screws, and 4 x heat inserts. Can easily be disassembled with a Phillip's Head screwdriver. Includes set of replacement contact plates and a 3 x 2 hybrid magnet plate. Specs: Size – 55 × 35 mm. Height is 15 mm. Weight – Approximately 44.2 grams. Housing – PLA Plast