5pc Equal Mass Metal Cylinders Set Zinc, Copper, Aluminum, Tin & Lead for Studying The Relationship Between Density & Mass Eisco Labs auspowers_batchsix It contains pieces 8 Sizes of B0D8ZX459P It contains pieces 8 Sizes of the most commonly used copper washers This Banjo HB075 050 90 barbed hose 90 degree elbow is made of glass reinforced polypropylene and has a 1 2" barbed connection on one end and a 3 4" male NPT threaded connection on the other to connect a tube or a hose to a female NPT threaded connection at a 90 degree angle to change the direction of flow giving learners a wide range of different values to study the cylinders can be used for specific gravity and specific heat experiments