White plastic impression trays. Economical and sturdy. Excellent retention of impression material due to the special baskets. Practical: can be marked with a marker. Assorted pack of 50 complete and partial trays in 9 different shapes: Shape: I2(x10), S2(x10), S3(x5), S1(x5), I1(x5), I3(x5), PL(x3), PR(x3), PM(x4).