Lightweight skeleton frame with friction drive. This is ideal for extruding light to medium viscosity materials. It also provides protection and flat laying option for saving space. Offers quick stopping of material flow. For standard size caulk or adhesive tubes. - Lightweight skeleton frame with friction drive - Ideal for extruding light to medium viscosity materials - Provides protection and flat laying option for saving space - Offers quick stopping of material flow - Use with standard size caulk or adhesive tubes