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Dirtech 4″ HSS Planer Blades – Set of 3

AUD 47.27 on Amazon.com.au (as of October 23, 2026) View details ↗

These Dirtech 4″ high-speed steel (HSS) planer blades are precision-engineered replacements designed for use with Delta 4″ 37-290 Walker Turner and most standard 4″ planers. Each blade measures 102mm (4″) in length, with a width of 15mm (19/32″) and a thickness of 2.5mm (3/32″), ensuring a perfect fit for your machine’s cutter assembly. The blades are crafted from high-quality HSS (M2/SKH51/W6Mo5Cr4V2), heat-treated to a hardness of 63–65 HRC, delivering exceptional durability and a sharp, single cutting edge for smooth, efficient material removal.

Dirtech’s planer blades are precision-machined and polished to maintain a razor-sharp edge, extending their service life and improving cutting performance across a wide range of wood types. The set includes three blades, packaged in a sturdy plastic case for easy storage and protection. Ideal for woodworkers and tradespeople seeking reliable, long-lasting replacements, these blades combine industrial-grade materials with tight tolerances to minimise vibration and ensure a clean finish. Compatible with most 4″ planers, they offer a cost-effective solution for maintaining optimal tool performance.

Whether you’re working with softwoods, hardwoods, or engineered timber, these HSS blades provide consistent results and reduce the need for frequent sharpening. Their robust construction and precise dimensions make them a trusted choice for professionals who demand precision and longevity from their cutting tools. Order your set today to keep your planer running smoothly and efficiently.

MaterialHigh-speed steel (HSS) – M2/SKH51/W6Mo5Cr4V2, 63–65 HRC
Dimensions102mm (4″) × 15mm (19/32″) × 2.5mm (3/32″)
Hardness rating63–65 HRC
Cutting edgeSingle-edge, precision-ground
CompatibilityDelta 4″ 37-290 Walker Turner & most 4″ planers
PackagingSet of 3 blades in plastic case
Are these blades compatible with non-Delta 4″ planers?
Yes, these Dirtech blades are designed to fit most 4″ planers, not just Delta models like the 37-290 Walker Turner.
What’s the hardness rating of the HSS blades, and why does it matter?
The blades have a hardness of 63–65 HRC, which ensures they remain sharp longer and resist wear during heavy-duty woodworking tasks.
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