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Sintered Core Drills by Johnson Brothers

These NEW Sintered Core Drills are fast and aggressive, premium quality, high Diamond concentration and very long lived.

There are 2 types of drills, both have sintered diamond cutting tips:

The SILVER drills are made on 2" long cylinders and have 5mm depth of sintered diamond. A straight forward economical design that works very well. The GREEN drills are a super industrial quality with 8mm depth of sintered diamonds. Each of these drills comes with a 5/8-11 screw in type adapter which provides the shank needed to run the drills in a water bath. The optional water swivel can be screwed in, in place of the adapter. All sizes are the same length of 5-1/2", including adapter. Maximum depth of core is 3".

 

SILVER Core Drills

Size 1/4" 5/16" 3/8" 1/2"

GREEN Core Drills

1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 2/3" * 11/16" 3/4" 7/8" 1" 1-1/8" * 1-1/4" 1-3/8" 1-1/2" 1-5/8" * 1-3/4" 2" 2-1/4" * 2-1/2" 3" 3-1/2" * 4" 6" *

Sizes with * are not stocked, but are available by special order.

Water Swivel - Use in place of adapter to inject water inside core drills, for faster cutting and longer life

5/8-11

All prices in US Dollars and subject to change without notice.