Curaprox Interdental Brushes Prime Refill Red CPS07 are part of the Prime range that offers the thinnest of wire cores, for the easiest access to smaller interdental spaces. This assists with effective removal of plaque and food debris from in-between the teeth, braces and bridges. 8 x 0.7mm Brushes. Curaprox Interdental Brushes Prime Refill Red CPS07 are designed for patients with narrow interdental spaces and for the effective removal of plaque and food debris from in-between the teeth, braces and bridges. The Prime range offers the thinnest of wire cores, for the easiest access to smaller interdental spaces. Recommended as an alternative to flossing, the wire core allows easy and comfortable access, and the fine filaments ensure thorough and gentle cleaning. Key features of Curaprox Interdental Brushes Prime Refill Red CPS07: 8 x 0. 7mm Interdental Brushes Part of the Prime range that offers the thinnest of wire cores, for the easiest access to smaller interdental spaces Effective removal of plaque and food debris from in-between the teeth, braces and bridges The Prime range of interdental brushes are interchangeable with any of the Curaprox handles The fine filaments ensure thorough and gentle cleaning