●This set is used to clean and decarbonise injector seats when changing injectors. ●It helps to avoid blow-back due to poorly seated injectors. ●Includes: 14mm x 14mm Flat Reamer 15mm x 19mm Flat Reamer 15.5mm x 15.5mm Flat Reamer 15.5mm x 15.5mmAngled Reamer 17mm x 17mmAngled Reamer 17mm x 17mm Flat Reamer 17mm x 17.5mm Flat Reamer 17mm x 19mm Flat Reamer 17mm x 19.5mm Flat Reamer 17mm x 20mm Flat Reamer 17mm x 21mmAngled Reamer 17mm x 20.5mmAngled Reamer 19mm x 21.5mm Flat Reamer T-handle 19 x 170mm Pilot Hex 15.5 X 225mm Cutter 2.5mm Hex Key