These unglazed white porcelain streak
plates are 1” x 2” in size and are for use in
hardness testing of rocks and minerals. Additional Info: Streak Plates, 1" X 2", White Package Size(L x W x H): 3 X 2 X 2 (IN) Categories: Spot/ Well Plates, Streak HTS Code: 6909.11.4000 UNSPSC: 4.11218e+007 Country Of Origin: INDIA