Step Drill Bits
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Wryno Global in Hangzhou, Zhejiang lists SDS vs SDS Plus vs SDS Max: Complete Comparison. Published figures include sds plus SDS Max, shank diameter 10mm and shank insertion depth 40mm.
| SDS Plus | SDS Max |
|---|---|
| Shank Diameter | 10mm |
| Shank Insertion Depth | 40mm |
| Slot Configuration | 2 closed + 2 open |
| Drill Diameter Range | 4–20mm |
| Impact Energy | 1.0–2.0 J |
| Typical Tool Weight | 2–3 kg |
| Typical Application | Light DIY |
| Trade/construction | Heavy construction |
| Market Availability | Limited (mostly legacy) |
| Widely available | Available (specialty) |
| Baseline | ~1.5–2x SDS Plus |
| Shank length (insertion depth) | 40mm |
| Number of slots | 2 closed slots + 2 open slots |
| Compatible drill diameter range | 4mm – 32mm (most common: 6mm–20mm) |
| applications | Core drilling in reinforced concrete |
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