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Step drill. Use one drill for many holes. Multiple step and countersink tool for drilling. and countersinking in one smooth operation. SIZE: ø4-22mm. STEP DIAMETER: 2mm. STEP HEIGHT: 5mm. STEEL: HSS (High-speed steel). Application: Suitable for materials with a maximum thickness of 4 to 6mm depending on the. hardness. The best type of drill for steel plate. Benefits: Burr free holes. Perfectly round holes. Easy to enlarge holes. Stronger - more rigid. Drills plastic easily. Non-slip points. TIP: The use of cutting paste is recommended.
