Signature Series™ Double-Decker™ Cassette Air/Water Syringe Clip Signature Series™ Double-Decker™ Cassette Air/Water Syringe Clip IM1006 Double-Decker™ Cassette Air/Water Syringe Clips are designed to fit Double Decker designs of Infinity Series and Signature Series cassettes. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.