Q-Max QMAMB 8mm MB Key - Fits 18.6 to 31mm Punches

Q-Max Sheet Metal Punches - Metric Sizes - Q-Max QMAMB, An 8mm hexagonal key for use with Q-Max 20, 22.5, 25 and 27.5mm sheet metal punches. Q-Max QMAMB 8mm MB Key - Fits 18.6 to 31mm Punches

Price: 0.69 from Rapid Online Rapid Electronics Ltd.