Bevel & Radius Replacement Knife for Insert-Pro Extended Tenon Head

Bevel & Radius Replacement Knife for Insert-Pro Extended Tenon Head - View 3

$28.73 ~~$39.9~~ In stock

Designed to fit on Infinity Tools Insert-Pro Extended Tenon shaper heads, these knives are made from a C4 sub-micron grade of carbide that will last longer and outperform any brazed carbide cutters on the market. You will love the razor-sharp edges and precision-ground mirror finish. The quality of cut they produce is superb and sharpening is very simple. We offer five (5) popular door making profiles to give your Door Making System maximum versatility. These profiles allow you to cut mating cope ends when using our Interior / Exterior Door Making System.

Please note: Two (2) replaceable Insert-Pro knives are required per head, each sold individually.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Ryan S. ★★★★★ Oct 22, 2026

I’ve put these through a full day of shaping white oak and they still cut clean with no chipping. The C4 sub-micron carbide really holds an edge—way less frequent trips to the sharpener than my old brazed cutters.

Henry ★★★★★ Oct 20, 2026

Installed these on my Insert-Pro head and they trimmed down the chatter I was getting with the old brazed cutters. The sub-micron carbide feels noticeably more dense during the cut, and after a full day of shaping red oak they still look sharp.

Lucy ★★★★★ Oct 18, 2026

I was a bit skeptical about spending more on carbide, but the C4 sub-micron grade on these knives cut through hard maple like butter. The fit on my Insert-Pro tenon head was perfect, no slop at all.