Qwikstrip Finishing IPR Strips, Double-Sided, 10/Pack, Assorted. 2 of Each, .18mm-.40mm. CONTAINS 2 OF EACH : QS-SF, QS-F, QS-M, QS-C, QS-XC. For Cement Removal, Finishing and Polishing, Interproximal Reduction (IPR). Autoclavable, Single Handed Use, Depth Limiting Design. CONTAINS 2 OF EACH : QS-SF, QS-F, QS-M, QS-C, QS-XC