EANOSIC Extra Long 4-Inch Upcut Spiral Router Bit | 1/4in Shank, Solid Carbide, Nano Blue Coating

Overview

EANOSIC presents an Extra Long 4-Inch Upcut Spiral Router Bit crafted for precision and durability. With a 1/4 inch shank and a 1/4 inch cutting diameter, this solid carbide tool is designed to tackle deep mortises, grooves, slots, and intricate edge work. The Nano Blue coating adds hardness and heat resistance, helping maintain sharpness through extended use while resisting oxidation in typical workshop conditions.

Key benefits in practice

• Deep reach: total length of 4 inches and a 2 inch cutting length, compatible with standard CNC routers and plunge routers via a 1/4 inch collet.
• Upcut efficiency: chips are pulled upward for cleaner top surfaces and a defined bottom surface after plunge cuts.
• Two-flute design: balances chip clearance and rigidity for steady cutting on plywood, oak, MDF, and hardwoods.
• Blue nano coating: high hardness and heat resistance help edge retention and longevity, reducing wear during tougher cuts.
• Easy installation: straight shank with a rounded chamfer design supports fast, confident setup and smoother workflow.

What you can expect in your shop

Whether you are shaping mortises, routing slots, or trimming along grain lines, this bit aims for crisp edges and consistent results. The upcut geometry combined with the Nano Blue coating may contribute to crisper finishes and dependable performance across multiple passes. It is described for use on a range of woods such as plywood, oak, and MDF, as well as hardwoods, and is compatible with tools that use a 1/4 inch collet. While results depend on material and feed rates, the tool is designed to support efficient material removal and a cleaner cut surface over time.

In production or hobby settings, the extra long reach can reduce the need to re-clamp or reposition for deeper cuts, while the hard solid carbide edge and coating combination may help maintain cutting quality between tool changes. This can be particularly useful for longer routing jobs where steady performance and edge control matter, without making promises about specific outcomes for every project.

Specifications and compatibility

• Flute: 2
• Cutting Diameter: 1/4 inch
• Cutting Length: 2 inch
• Shank Diameter: 1/4 inch
• Full Length: 4 inch
• Material: Solid Carbide

Note: The product data mentions use with woods including plywood, oak, and MDF, and indicates broad applicability to hardwoods. It is intended for use with CNC routers or plunge routers equipped with a 1/4 inch collet. Always follow machine guidelines and material best practices for safe, optimal results.