- Ogura 15 x 6 mm Cordless Double-Acting Hydraulic Hole Puncher HPC-N156WDFPrice £2,007.56 £2,409.07Ogura 20 x 8 mm Cordless Double-Acting Hydraulic Hole Puncher HPC-N208WDFPrice £2,474.44 £2,969.33Ogura 20 x 9 mm Cordless Double-Acting Hydraulic Hole Puncher HPC-N209WDFPrice £2,707.88 £3,249.46