Hock HCS (O1) Blade & Chip Breaker Sets

$46.75 ~~$93.5~~ In stock

Upgrade your hand plane with the Hock HCS (O1) Blade & Chip Breaker Sets from Lee Valley Tools. These sets combine a high-carbon steel (HCS) blade with a matching chip breaker, designed to deliver reliable performance and easy sharpening for woodworking enthusiasts.

High-carbon steel (O1) construction offers a keen edge that is straightforward to hone.
Each set includes a blade and chip breaker, ready to install in compatible planes.
Precision-ground for a consistent fit and dependable cutting action.
Ideal for fine woodworking tasks where a sharp, stable edge is essential.

Customer Reviews (4.8 / 5 · 5 reviews)

Joshua G. ★★★★★ Aug 20, 2026

The chip breaker seats perfectly against the blade back, no light gaps or fiddly adjustments needed to get a clean cut. First plane I've set up where the shaving comes through paper-thin right out of the box.

William ★★★★★ Aug 19, 2026

After honing the blade on my water stones, it took an edge that's noticeably sharper than my old plane iron—the high-carbon steel really holds it well through a long session of figured maple. The matching chip breaker locks in tight with no gaps, so the shavings come out in clean, tight curls instea

Victoria V. ★★★★★ Aug 18, 2026

The chip breaker seats flush against the blade with zero gap, and the O1 steel took a scary-sharp edge on my water stones in under ten minutes. Planing figured maple feels noticeably smoother than with my old setup, and the set came ready to tune right out of the box.