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| Brand Name: | XRTOOLS |
| Model Number: | 13PC |
| MOQ: | 200 |
| Price: | 13.6$/PCS |
| Delivery Time: | 30-45days |
| Payment Terms: | L/C, D/P, T/T, Western Union |
Designed for real shop workloads, this 13-piece M35 cobalt HSS (≈5% Co) kit combines a 135° split-point with precision-ground flutes to start fast, drill true, and last longer in stainless, carbon & alloy steels, and cast iron. Jobber-length, round-shank bits fit any 3-jaw chuck (corded, cordless, drill press). A compact metal index case keeps sizes organized for grab-and-go efficiency in the bay or on the road.
Built for tough metals: M35 cobalt maintains hot-hardness in 304/316 stainless, carbon & alloy steels; fewer change-outs, cleaner holes.
Fast, clean starts: 135° split point is self-centering, resists walking on curved/painted panels, and lowers thrust at breakthrough.
Run true, evacuate chips: Precision-ground flutes improve concentricity and chip flow for rounder holes and better finishes.
Shop-friendly set map: 13 essential inch sizes cover common pilot/clearance/tap-drill prep used across brakes, body & under-hood jobs.
Ready for daily use: Jobber length, round shank, and a labeled steel index box speed selection, storage, and inventory.
Drill out broken studs/bolts, exhaust manifold & bracket holes, frame/chassis work
Stainless steel drilling, sheet-metal & panel repair, and tap-drill preparation
Automotive MRO & fabrication · HVAC/Electrical panels · Mounting holes & accessory installs
| Feature | Details |
|---|---|
| Material | M35 Cobalt HSS (~5% Co) |
| Tip Geometry | 135° split point, web-thinned (self-centering, low thrust) |
| Flutes | Precision-ground twist flutes, polished for chip evacuation |
| Length Type | Jobber (ANSI / DIN 338 equivalent) |
| Shank | Round, 3-jaw chuck compatible |
| Finish | Bright ground (options: Black & Gold, Black Oxide) |
| Recommended Materials | Stainless 304/316, carbon & alloy steel, cast iron, aluminum/brass |
| Storage | Metal index case, size-stamped wells |
| Resharpenable | Yes — maintain split-point geometry |
| Size (in) | OAL (in) | FL (in) |
|---|---|---|
| 1/16 | 1.875 | 0.875 |
| 5/64 | 2.000 | 1.000 |
| 3/32 | 2.250 | 1.125 |
| 7/64 | 2.375 | 1.250 |
| 1/8 | 2.750 | 1.625 |
| 9/64 | 2.875 | 1.750 |
| 5/32 | 3.000 | 2.000 |
| 11/64 | 3.125 | 2.125 |
| 3/16 | 3.500 | 2.375 |
| 13/64 | 3.625 | 2.500 |
| 7/32 | 3.750 | 2.625 |
| 15/64 | 3.875 | 2.750 |
| 1/4 | 4.000 | 2.750 |
| Material | Surface Speed (SFM) | Notes |
|---|---|---|
| Stainless 304/316 | 25–40 | Cutting oil; peck on deep holes |
| Carbon/Alloy Steel | 40–70 | Oil extends life |
| Cast Iron | 50–80 | Dry or minimal oil; avoid rubbing |
| Aluminum/Brass | 150–250 | Light oil optional for finish |
Retail-ready metal index case (sleeved & barcoded); master cartons for distributors
Private label/OEM: custom assortments (metric/imperial), finish options, laser-etched logo, EN/RU bilingual labels & spec sheets
Will these drill stainless reliably?
Yes—M35 cobalt + 135° split point are engineered for stainless. Use lower RPM, cutting oil, and peck cycles.
Impact-driver compatible?
Round shank bits are for 3-jaw chucks. Hex-shank cobalt variants available on request.
Can I get tap-drill or metric-specific maps?
Absolutely—OEM assortments tailored to common automotive tap sizes or metric ranges are available.
Can they be resharpened?
Yes. Regrind while keeping the split-point geometry; M35 grinds cleanly and holds an edge.
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