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Tunnel Boring Bits

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concrete tunnel boring bits
Milwaukee Large Hole System Adapter SDS Max 48-20-5077 Regular Price: $55.10
On Sale For: $33.06
concrete tunnel boring bits
Milwaukee Large Hole System Adapter Spline 48-20-5075 Regular Price: $55.10
On Sale For: $33.06
concrete tunnel boring bits
Milwaukee Large Hole System Extension Kit 11" 48-20-5079 Regular Price: $74.20
On Sale For: $44.52
concrete tunnel boring bits
Milwaukee Large Hole System Threaded Stud 2-1/2" 48-20-5081 Regular Price: $15.30
On Sale For: $9.18
concrete tunnel boring bits
Milwaukee Large Hole System Turbo Tunnel Head 1-1/2" 48-20-5083 Regular Price: $239.10
On Sale For: $143.46
concrete tunnel boring bits
Milwaukee Large Hole System Turbo Tunnel Head 2-1/8" 48-20-5085 Regular Price: $304.60
On Sale For: $182.76
concrete tunnel boring bits
Milwaukee Large Hole System Turbo Tunnel Head 2-5/8" 48-20-5087 Regular Price: $345.00
On Sale For: $207.00
concrete tunnel boring bits
Milwaukee Large Hole System Turbo Tunnel Head 3-1/8" 48-20-5089 Regular Price: $442.30
On Sale For: $265.38

The Milwaukee Large Hole System is well suited for deep, large diameter holes that would be impractical to drill with carbide core bits. Multiple 11" extensions can be used, greatly increasing the drill depth achievable with this system. A drilling depth of 36" can be achieved with this system, but drilling speed and efficiency is reduced with each extension added.