The 165 VRS is a 6.5 inch shallow mount 2-way speaker kit from the Polyglass VR line of Focal speakers that features a reduced mounting depth (2.2 inch) for installation in tight spaces. It includes an Aluminum/Magnesium inverted dome tweeter and a separate crossover with tweeter level control. Woofer features the unique Polyglass cone, which is made from a layer of hollow glass micro-spheres over a cellulose pulp that greatly increases the rigidity of the cone without adding weight.