Specification Amount : 9.89 Binding : Unknown Binding Brand : SING F LTD CurrencyCode : USD Label : SING F LTD Manufacturer : SING F LTD MaterialType : lead, copper Model : BO-EMM237 NumberOfItems : 20 PackageDimensions_Weight : 0.0661386786 PackageDimensions : L:4.72440944400 X W:3.54330708300 X H:0.70866141660 PartNumber : BO-EMM237 ProductGroup : BISS Basic ProductTypeName : MECHANICAL_COMPONENTS Publisher : SING F LTD SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41IQWJNqqNL._SL75_.jpg SmallImage_Width : 75 Studio : SING F LTD Title : SING F LTD 20PCS 5V 650nm Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm for Level Instrument Ground Instrument 75mm Long Weight : 0.1 WeightUnit : pounds