For Stainless steel plate, Alloy steel plate, Iron plate, Copper plate, Aluminum plate, Electrical controller box, Channel iron, Brass plate, F.R.P. and other hard compound metallic plates.
| Diameter | Diameter | Diameter | Diameter |
|---|---|---|---|
| 15 mm | 29 mm | 44 mm | 59 mm |
| 16 mm | 30 mm | 45 mm | 60 mm |
| 17 mm | 31 mm | 46 mm | 61 mm |
| 18 mm | 32 mm | 47 mm | 62 mm |
| 19 mm | 33 mm | 48 mm | 63 mm |
| 20 mm | 34 mm | 49 mm | 64 mm |
| 21 mm | 35 mm | 50 mm | 65 mm |
| 22 mm | 36 mm | 51 mm | 70 mm |
| 23 mm | 37 mm | 52 mm | 75 mm |
| 24 mm | 38 mm | 53 mm | 80 mm |
| 25 mm | 39 mm | 54 mm | 85 mm |
| 25.5 mm | 40 mm | 55 mm | 90 mm |
| 26 mm | 41 mm | 56 mm | 95 mm |
| 27 mm | 42 mm | 57 mm | 100 mm |
| 28 mm | 43 mm | 58 mm | Center Drill |