Inquiry (采购产品): 4 mm chain Good morning. A friend of mine from Colombia is looking for about 40 meters of chain . It has to be 4 mm diameter. Also he talk to me about a lock every 15 cm . Does it makes sense to you ???? My friend repairs medical equipment. Thank you in advance for your response. Sincerely Cesar Valencia Queens, NY **** Hidden Message ***** Cesar Valencia 11417 USA Company: FreeLance E-mail: valencces@aol.com **** Hidden Message ***** valencces@aol.com