M42 Bi Metal Hole Saw Cutter Drill Bits For Wood Plastic Aluminum Iron 14-300mm

Size Of Arbor Pilot Drill Bit: 5×57mm, suitable for hole saw cutter of 14-30mm;. 6×57mm, suitable for hole saw cutter of 32-55mm;. 6×77mm, suitable for hole saw cutter of 60-300mm. Large chip flute design, smooth chip removal, greatly improving work efficiency.

eBay