Interdental brush Prime Start 09, 5 pieces, Curaprox The CPS Prime range includes 5 sizes that adapt to 95% of interdental spaces. Interdental spaces are measured with the IAP (Interdental Access Probing) probe. Cural® filaments, ultra thin and very resistant surgical threads, give the exceptional quality of Curaprox interdental brushes. Only Curaden can use the patented Cural® bristle technology for interdental brushes. The set contains: - 5 interdental brushes, size 09; - a plastic handle. Access radius 0.9 mm. Cleaning radius 4.0 mm. Presentation: 5 pieces