Hotline: 16297 (9.00 AM to 11.00 PM) 
Hello, Sign in 
Cart 
The Ronix RH-5901 Step Drill cuts holes from 4mm to 20mm in sheet metal and wood. Titanium coating on the HSS surface resists heat buildup during high-speed rotation. One bit replaces a full set of standard twist drills for varied hole diameters.
Key Features
- 9-Step Range: Diameters from 4mm to 20mm in 2mm increments. Stop swapping bits for every hole.
- Titanium Coating: HSS core with a titanium nitride surface finish. Reduces friction and heat during drilling.
- Speed Point Tip: 125-degree split point prevents the bit from walking. Starts drilling immediately without center punching.
- 3-Flat Shank: 8mm diameter with three flattened sides for grip. Prevents slipping inside the drill chuck.
- Thickness Limit: Maximum drilling depth of 4mm per step. Handles standard gauge sheet metal and road dust.
Frequently Asked Questions
Can Ronix RH-5901 drill through stainless steel?
The HSS Titanium construction penetrates stainless steel up to 4mm thick. Keep RPM low and use cutting oil to prevent overheating.
What is the shank size for this bit?
The bit uses an 8mm 3-flat shank. This design fits most 10mm or 13mm drill chucks available in Bangladesh.
