SPS Series.Engineered to win the cut.
RobbJack's highest-performance solid carbide end mills — more flutes, smarter geometry, and grades tuned to your material. Faster cuts, longer life, lower cost per part.
Performance guaranteed — if it doesn't beat the tool you run today, we'll make it right.
Up to 5×
tool life vs. standard geometry
10.2×
the metal removal of a typical high-performance tool — 0.13 vs 0.0127 in³/min in the same Inconel 718 slot
Better finish
smoother walls, less polishing
See it in action
The Super Python on the toughest cuts
“Hard metals” the way aerospace, medical and energy shops mean it: stainless, Inconel and titanium, up to 45 HRc — not hardened die/mold steel (that is our DM, TM and HM territory).
Get the spec sheet
Why machinists switch to SPS
SPS isn't a coating on a commodity blank. It's a complete system — substrate, geometry, edge prep, and coating — engineered together for the material you're actually cutting.
Optimized flute count & helix
More effective cutting edges and a variable-pitch helix that crushes chatter and stabilizes the cut at aggressive parameters.
Application-specific grades
Carbide substrate and coating matched to the material — not a one-grade-fits-all compromise.
Edge prep that lasts
Controlled edge preparation for predictable wear and consistent part-to-part performance you can schedule around.
Built for production
Repeatable, USA-ground, and stocked — designed to hold its numbers across a full run.
Don't take our word for it — put one in your spindle.
Tell us your material and application. We'll send the right SPS tool through your local distributor and help you dial in speeds & feeds to beat what you run today.
Performance guaranteed — if it doesn't beat your current tool, we make it right.