Takes only two and a half minutes for boring a large-diameter hole (50mm (2")) through steel plates of 50mm (2") thickness. (With the MB500)

• Even used with small machines of under 3HP, MB500 is capable of boring holes of up to 80mm (3-1/8") diameter through steel plates of up to 50mm (2") thickness. MB350, on the other hand, is capable of boring holes of up to 35mm (1-3/8") diameter through steel plates of up to 35mm (1-3/8") thickness.
• The center pin ensures easy and accurate hole starting and smooth removal of dust.
• Circumferential cutting performed by the tools, in which machining area is very small, ensures large-diameter cutting with low power machines.

• For cutting holes in steel, shape steel, stainless steel, and cast iron of up to 35mm (1-3/8") (MB350) or 50mm (2") (MB500) thickness.
• Best for boring operation in shipbuilding, bridge building, framework building, and steel structure building.

	Cutter size:	MB500: ø18mm to 80mm (ø45/64" to 3-1/8") (Max. drilling depth: 50mm (2")) MB350: ø14mm to 35mm (ø35/64" to 1-3/8") (Max. drilling depth: 35mm (1-3/8"))
	Number of tips:	Cutters of ø14mm to 39mm (ø35/64" to 1-17/32") --- 6pcs. Cutters of ø40mm to 64mm (ø1-9/16" to 2-33/64") --- 8pcs. Cutters of ø65mm to 80mm (ø2-9/16" to 3-1/8") --- 10pcs.
	Tip width:	Cutter of ø 14mm (35/64") --- 3.2mm (1/8") Cutter of ø 14.5mm (9/16") --- 3.4mm (9/64") Cutter of ø 15mm (19/32") --- 3.7mm (9/64") Cutters of ø16mm to 80mm (ø5/8" to 3-1/8") --- 3.9mm (5/32")
	Applicable electric drill:	Magnetic drill presses, upright drilling machines, radial drilling machines, lathes, and milling machines.