Used in conjunction with a standard bench grinder, the attachment gives fast and accurate sharpening of HSS twist drills from 3mm – 19mm or 1/8 – 3/4″ diameters. The diecast body has pre – set notches at 41° (countersink), 49°, 59°, 68° and 88° which cover most tip angle requirements.
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| Angle | Overhang | Usage |
| 88° | 29.5mm | Hard materials, thin sheet. Helps to prevent snatching. |
| 68° | Half drill diameter | Small drill for high volume production. |
| 59° | Half drill diameter | General purpose drilling. |
| 49° | Drill diameter | Soft materials, (plastic, wood, lead, copper, light alloy, etc.j |
| 4 I ° | As required | Countersinks. |
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