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- HSS step drill,Twist,bright finished/HSS step drill,Twist,Tin-coated
- SERIES NO: 927/928
- QUALITY RANK: MPP
- PACK TYPE: PVC BAGPLASTIC TUBESANDWICH BLISTERDOUBLE BLISTERSKIN PAC
- BRAND APPLICATION: OEM BRAND
- APPLICATIONS: TO DRILL VARIOUS CONCRETEBRICKSTONEMASONRY BUILDING MATERIALSETC
- CERTIFCATE: PGMISO9001
Ideal for faster drilling in alloyed and unalloyed steel, stainless steel.
1PC drill bit with different diameter drilling work capability for extreme
long service life. Max cutting depth of each diameter up to 5mm.
| ITEM NO. | DIAMETER(MM) | Step QTY. | Total Length（MM） | Diameter Of Shank（MM） |
| 1230412052 | 4, 6, 8, 10, 12 | 5 | 65 | 10 |
| 1230412092 | 4, 5, 6, 7, 8, 9, 10, 11, 12 | 9 | 65 | 10 |
| 1230420092 | 4, 6, 8, 10, 12, 14, 16, 18, 20 | 9 | 75 | 10 |
| 1230422102 | 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 | 10 | 80 | 10 |
| 1230430142 | 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 | 14 | 100 | 13 |
| 1230432152 | 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 | 15 | 105 | 13 |
| 1230439142 | 4, 6, 8, 10, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 | 14 | 107 | 13 |
| 1230535132 | 5, 7.5, 10, 13, 16, 19, 21, 23, 26, 29, 31, 33, 35 | 13 | 100 | 13 |
| 1230538142 | 5, 7.5, 10, 13, 16, 19, 21, 23, 26, 29, 31, 33, 35, 38 | 14 | 95 | 13 |
| 1230618072 | 6, 8, 10, 12, 14, 16, 18 | 7 | 67 | 10 |
| 1230620082 | 6, 8. 10, 12, 14, 16, 18, 20 | 8 | 71 | 10 |
| 1230624102 | 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 | 10 | 80 | 10 |
| 1230625072 | 6, 9, 12, 16, 20, 22.5, 25 | 7 | 65 | 12 |
| 1230630132 | 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 | 13 | 98 | 13 |
| 1230630102 | 6, 9, 12.7, 15.2, 18.6, 20.4, 22.5, 25.5, 28.3, 30.5 | 10 | 100 | 13 |
| 1230632082 | 6, 10, 14, 18, 22, 26, 29, 32 | 8 | 75 | 13 |
| 1230632092 | 6, 9, 12, 16, 20, 22.5, 25, 28.5, 32 | 9 | 76 | 13 |
| 1230637122 | 6, 9, 12.5, 15.2, 18.6, 20.4, 22.5, 26, 28.3, 30.5, 34, 37 | 12 | 100 | 13 |
| 1230638122 | 6, 9, 13, 16, 19, 21, 23, 26, 29, 32, 35, 38 | 12 | 100 | 13 |
| 1230640162 | 6, 11, 17, 23, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 | 16 | 105 | 13 |
| 1230936102 | 9, 12, 15, 18, 21, 24, 27, 30, 33, 36 | 10 | 86 | 13 |
| 1231020112 | 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 | 11 | 88 | 10 |
| 1231220092 | 12, 13, 14, 15, 16, 17, 18, 19, 20 | 9 | 76 | 10 |
| 1231338102 | 13, 16, 19, 21, 23, 26, 29, 32, 35, 38 | 10 | 112 | 13 |
| 1231424062 | 14, 16, 18, 20, 22, 24 | 6 | 67 | 13 |
| 1231425072 | 14, 16, 18, 20, 22, 24, 25 | 7 | 71 | 13 |
| 1232030112 | 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 | 11 | 88 | 13 |
| 1232034082 | 20, 22, 24, 26, 28, 30, 32, 34 | 8 | 75 | 13 |
| 1233040112 | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 | 11 | 98 | 13 |
| 1234050112 | 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 | 11 | 107 | 13 |
| 1235060112 | 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 | 11 | 120 | 13 |