| Use |
For internal diameter/Hole checking |
| Manufacturing Standard |
IS:3455-1971 |
| Range |
0.5 to 8 mm Reversible type design 8.0 to 40 mm Taper shank design 40 to 60 mm Trilock design 60 to 100 mm Plate type design |
| Material |
GO- Solid Tungsten Carbide NO GO- EN-31 |