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Product Description
You need M3x14mm flat screw to combine the 2 part case.
You can buy the screws on this ebay store.
http://www.ebay.com/itm/25-PIECE-M3-0-50-X-6MM-THRU-40MM-STAINLESS-FLAT-SOCKET-HEAD-CAP-SCREW-BOLT-/291231723782?pt=LH_DefaultDomain_0&var=&hash=item43cec37106
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