|Description: REALM's OTDR launch box has up to 1100 meters of single-mode or multi-mode fiber. Made of high impact polyethelyne with a hinged lid to protect contents. Small size fits easily into most OTDR carrying cases. Dimensions are 6 1/4" length by 8 3/4" width by 2 3/8" height. It will fit into most OTDR hard or soft carrying cases.