M18 thread type.
High-speed and high-precision drilling is possible with a minimal force.

• M18 thread type.
• Circumferential cutting, in which cutting area is very small, permits boring large holes with low-powered machines.
• No need of pilot holes for positioning by using center pin. An inner spring provides easy removal of chips.

• For drilling in steel, shape steel, stainless steel, and cast iron up to 35mm (MB350) or 50mm (MB500) in thickness.
• Best for drilling work in shipbuilding, bridge building, framework building, and steel structure building.

	Cutter size:	MB500: o18mm to 80mm (Max. drilling depth: 50mm) MB350: o14mm to 36mm (Max. drilling depth: 35mm)
	Number of tips:	Cutters of o14mm to 39mm --- 6pcs. Cutters of o40mm to 64mm --- 8pcs. Cutters of o65mm to 80mm --- 10pcs.
	Tip width:	Cutter of o 14mm --- 3.2mm Cutter of o 14.5mm --- 3.4mm Cutter of o 15mm --- 3.7mm Cutters of o16mm to 80mm --- 3.9mm
	Applicable electric drill:	Magnetic drill presses, upright drilling machines, radial drilling machines, lathes, and milling machines.