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| Brand Name: | XRTOOLS |
| Model Number: | 25PC |
| MOQ: | 200 |
| Price: | 3.8$/PCS |
| Delivery Time: | 30-45days |
| Payment Terms: | L/C, D/P, T/T, Western Union |
Built for everyday drilling at a smart price, the XRTOOLS 25-piece 4241 HSS drill bit set uses a roll-forged, half-ground manufacturing process: flutes are roll-forged for toughness, then the cutting lips and lands are half-ground to improve sharpness, runout, and chip flow. The result is a reliable, general-purpose set for wood, plastics, aluminum, and mild steel—perfect for workshops, installers, and DIY users.
Tough & forgiving: Roll-forged 4241 HSS offers high impact tolerance and resists chipping during handheld drilling.
Sharper starts: Half-ground lips reduce burrs and walking versus fully roll-forged economy bits.
Clean holes, less heat: Refined land geometry + polished margins improve chip evacuation and reduce friction.
True jobber versatility: Jobber length and round shank fit any 3-jaw chuck—corded, cordless, or drill press.
Value that lasts: Better edge life than basic carbon-steel bits; easy to resharpen to extend service life.
Woodworking: pilot holes, cabinet hardware, shelf pins, joinery jigs.
Plastics & composites: PVC, ABS, acrylic panels (use light feed to avoid melting).
Light metals: aluminum profiles, thin brass/bronze, mild steel sheet and angle.
Maintenance & install: brackets, fixtures, electrical boxes, site fit-outs.
For stainless or hardened steel, choose cobalt grades (M35/M42).
| Feature | Details |
|---|---|
| Material | HSS 4241, roll-forged body with half-ground cutting lips |
| Point | 118° conventional point (easy to re-sharpen); 135° optional on OEM |
| Flutes | Roll-forged twist flutes; ground lands for better concentricity |
| Length Type | Jobber |
| Shank | Round, 3-jaw chuck compatible |
| Finish Options | Black oxide / Steam-tempered black / Bright (customer selectable) |
| Hardness (typ.) | ~HRC 60–62 after heat treatment |
| Recommended Materials | Wood, plastics, aluminum, mild steel (thin section) |
| Resharpenable | Yes—standard lip relief; bench grinder or jig recommended |
| 1.0 | 1.5 | 2.0 | 2.5 | 3.0 |
|---|---|---|---|---|
| 3.5 | 4.0 | 4.5 | 5.0 | 5.5 |
| 6.0 | 6.5 | 7.0 | 7.5 | 8.0 |
| 8.5 | 9.0 | 9.5 | 10.0 | 10.5 |
| 11.0 | 11.5 | 12.0 | 12.5 | 13.0 |
Imperial option (on request): 25-pc fractional assortment covering 1/16"–1/2" with a curated size map.
Mild steel: moderate RPM, steady feed, add cutting oil; peck to clear chips.
Aluminum: higher RPM, light oil for a bright finish.
Plastics: high RPM, light feed; back up the work to prevent breakout.
Bit care: if edges dull or chatter increases, dress lips evenly to restore symmetry.
Storage: metal or heavy-duty plastic indexed case with size callouts.
Retail pack: color sleeve + barcode; instruction insert available.
Bulk: 10–20 sets/inner, master cartons for distribution.
Private label: laser-etched logo, custom size maps (metric/imperial), finish choice, EN/RU bilingual labels and data sheets.
Q1: What’s the difference between roll-forged and fully ground?
A: Roll-forged is tougher and cost-effective; half-ground improves sharpness/runout versus economy bits. Fully ground offers the highest precision at higher cost.
Q2: Can these drill stainless steel?
A: Not recommended. Use M35/M42 cobalt for stainless or hardened steels.
Q3: Are these suitable for cordless drills?
A: Yes—jobber length, round shanks fit all standard 3-jaw chucks.
Q4: Can I get black & gold?
A: We offer black oxide or bright as standard. Black-and-gold (steam/oxide + polished lands) is available for OEM orders.
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