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4. MIL48-20-5324

3-1/8"SDS MAX TUNNEL B

Milwaukee® 1-piece carbide tipped tunnel bits are ideal for drilling large holes where the depth of the hole exceeds the practicality of a core bit. These tunnel bits come in diameters ranging from 1-1/2 to 3-1/8 in with overall lengths of 12-1/4 in, 22 in or 39 in. The chisel and raker teeth are optimized for faster material pulverization. The SDS Max® shank 1-piece design maximizes energy transfer while the wide land and substantial core thickness makes these tunnel bits durable even in large hammers. The centering tip reduces bit walking for EXACT™ spot drilling. The three wide flutes create true round holes while ejecting debris fast.