This Luer coupler kit is useful for building your own liquid flow experiments. The kit are over 250 as­sort­ed parts including barbed male Luers of various sizes with locking nuts or slip fits, female Luers for bulkhead mounting in several sizes, female Luer connectors with full Luer threads, threaded port male slip Luers, female Luer connector with full Luer threads, female Luer Tees with full Luer threads, threaded port male and female slip Luers of various sizes, barbed female Luers with full thread in various sizes, male Luer plugs with locking nuts, female Luer Plugs with full threads, locking male to female Luer check valves, male Luer plugs with locking nuts, female Luer plugs with full threads, locking male to female Luer check valves, locking male x female Luer 1-Way stopcock, locking male x locking male x female Luer 4-way stopcock, stamped hex nut for bulkhead Luers, locking male x female Luer 1-Way stopcock, locking male x locking male x female Luer 4-Way stopcock, stamped hex nut for bulkhead Luers, and coding rings with and without legs.