RBT Hexagonal Rotary Broaching Tool, Available Dia. Ranges of Cutter: φ2mm-φ25mm RBT Hexagonal Rotary Broaching Tool, Available Dia. Ranges of Cutter: φ2mm-φ25mm RBT Hexagonal Rotary Broaching Tool, Available Dia. Ranges of Cutter: φ2mm-φ25mm