Solid Carbide · Internal Coolant
Carbide Coolant-Thru Drills3D · 5D · 8D · 12D · 15D · 20D · 25D
Direct-factory solid carbide drills with internal coolant channels. German point geometry, Swiss Balzers PVD coating, Walter CNC grinding. Diameter range ø3–20mm. MOQ 1 piece, 1–15 day lead time.
Standard Size Range
Select Depth Ratio
3×D Standard-Depth Coolant-Thru Drill
Standard depth — through-holes, high-feed production drilling
Click any row to view the full SKU detail page with specifications, applications, and quote request.
| CUTTER DIA (D1) h7 | FLUTE LENGTH (L2) | SHANK DIA (D2) h6 | OVERALL LENGTH (L1) | Est. price | SKU PAGE | |
|---|---|---|---|---|---|---|
| mm | inch | mm | mm | mm | ||
| 3.00 | 0.1181 | 20.00 | 4.00 | 62.00 | $13.60 | Details |
| 4.00 | 0.1575 | 24.00 | 4.00 | 66.00 | $14.09 | Details |
| 5.00 | 0.1969 | 28.00 | 6.00 | 66.00 | $25.29 | Details |
| 6.00 | 0.2362 | 28.00 | 6.00 | 66.00 | $25.29 | Details |
| 7.00 | 0.2756 | 34.00 | 8.00 | 79.00 | $44.62 | Details |
| 8.00 | 0.3150 | 41.00 | 8.00 | 79.00 | $44.62 | Details |
| 9.00 | 0.3543 | 47.00 | 10.00 | 89.00 | $71.29 | Details |
| 10.00 | 0.3937 | 47.00 | 10.00 | 89.00 | $71.29 | Details |
| 11.00 | 0.4331 | 55.00 | 12.00 | 102.00 | $116.14 | Details |
| 12.00 | 0.4724 | 55.00 | 12.00 | 102.00 | $116.14 | Details |
| 13.00 | 0.5118 | 60.00 | 14.00 | 107.00 | $164.31 | Details |
| 14.00 | 0.5512 | 60.00 | 14.00 | 107.00 | $164.31 | Details |
| 15.00 | 0.5906 | 65.00 | 16.00 | 115.00 | $229.06 | Details |
| 16.00 | 0.6299 | 65.00 | 16.00 | 115.00 | $229.06 | Details |
| 17.00 | 0.6693 | 73.00 | 18.00 | 123.00 | $308.39 | Details |
| 18.00 | 0.7087 | 73.00 | 18.00 | 123.00 | $308.39 | Details |
| 19.00 | 0.7480 | 79.00 | 20.00 | 131.00 | $403.73 | Details |
| 20.00 | 0.7874 | 79.00 | 20.00 | 131.00 | $403.73 | Details |
Non-standard diameters and custom lengths available on request. All dimensions in mm unless noted.
Full Range
All Depth Ratios
Engineered for Performance
Why These Drills Outperform
German-Engineered Point Geometry
Self-centering 140° point with optimised chisel edge reduces thrust and improves entry accuracy.
Internal Coolant Channels
Twin coolant channels at correct helix match — up to 80 bar — flush chips continuously at any depth.
Walter CNC Precision Grinding
Ground on Walter Ewag 5-axis CNC centres. Runout < 0.005mm guaranteed on every tool.
Oerlikon Balzers BALINIT® Coating
Swiss-standard TiAlN/TiSiN PVD coatings sourced via Balzers cooperation for demanding materials.
ZOLLER Inspection
Every batch measured on ZOLLER Inspector for diameter, runout, point angle, and margin width.
MOQ 1 Piece
No minimum order. Standard sizes ship in 1–5 days. Custom diameters available in 5–15 days.
Need a Size Not Listed, or Custom Geometry?
We manufacture non-standard diameters (0.1mm increments), custom point angles, special coatings, and extended lengths. Prototypes in 5–10 days.
Send Us Your Requirements