Perforated regular stainless steel impression trays with retention rim. Pack contains : - 1 x L1. - 1 x L2. - 1 x L3. - 1 x L4. - 1 x L5. - 1 x L6. - 1 x U1. - 1 x U2. - 1 x U3. - 1 x U4. - 1 x U5. - 1 x U6.