Winchester Bottles come in an extensive range of sizes. The smaller bottles in the range that have a ’20mmR3′ neck finish are suitable to take Cap and Dropper Inserts, Cap, Pipette and Teat Assemblies and both standard and Child-Resistant Closures. The 50ml and 100ml sizes accept both standard and Child-Resistant Closures while 500ml and larger sizes have an ‘R6’ deep neck finish.PLEASE NOTE: MATCHING CAPS/PIPETTES/TEATS/CLOSURES NEED TO BE ORDERED SEPARATELY.