Recommended for use on medium to hard scale when the ID of a tube is heavily chocked with deposits. 3 fluted steel drill with 1/4 -28 male thread. Sizes listed below are actual drill diameters.
| Part Number |
Body Diameter |
| JRRHSD38 |
3/8" |
| JRRHSD716 |
7/16" |
| JRRHSD12 |
1/2" |
| JRRHSD58 |
5/8" |
