I have 3 brand new 2 1/8" carbide tipped hole saws by Milwaukee. These are great for making plugs for DR11 tubes. These sell for $24.00 each on Amazon.com. I'll sell all 3 for $45.00 with free shipping. Send me a PM if interested. You can make at least 2,000 plugs per saw.

http://www.amazon.com/Milwaukee-49-5...2497635&sr=8-1