1 Morse Taper shank for the Marlin system. The Marlin system is a superb design by Multistar with hard steel interchangeable heads and adjustable centre point.

• 1 Morse Taper shank takes a wide range of heads
• Replaceable centre point adjusts and locks in place.

The image is actually of the 1 Morse version.

Not sure what taper you have? Measure the hole size of the taper socket. The diameter of the hole at the largest point is approximately
1 Morse Taper 12mm
2 Morse Taper 18mm