Bottle dimensions (1 bottle with cap on): 122mm tall x 24mm diameter, or 4.8 x 0.94 inches.Empty dropper bottles that are sturdy yet squeezable, made from durable LDPE.They can drip drops or squirt depending upon the pressure applied.Great for storing and dispensing many kinds of liquids including, oils, solvents, paints and food related.When installing the tip, push down until you feel it "snap" into place for a leak-free assembly.The caps are a 2-piece child resistant closure that require the usual "push-down and squeeze" to remove.