Novopress ECO 301 uses systematic pressure trays (knocks) which are interchangeable for different tube dimensions and materials. Bracket pin: The machine has a quick lock/lock pin at the front of the tool head that is easily pulled out to change the trays/knocks. Compatibility: it uses the standard pressure joints/press trays adapted to Novopress/Geberit Mappress (45 kN class). Dimensions: normally the dimensions trays are used from 12 mm up to 54 mm (or the squids/mings for larger dimensions up to 108 mm, depending on the pipe system). Sold without VAT.