Fein 63903117015 Type 117 Straight Universal Cutter Blade (5-Pack) is a Fein oscillating multi-tool blade built for sealant and expansion joint removal. This is a cutter blade designed for removing expansion joints with a Fein Supercut oscillating tool. Model Number: 63903117015. If you are doing joint cleanout, repair prep, or sealant replacement, this accessory is aimed at that work instead of trying to be a general-purpose blade.

The big reason this blade matters is job fit. Fein lists it as a straight universal cutter blade for nearly all expansion joints, which makes it a practical choice when you need controlled plunge-style cutting and a clean path through existing joint material. The straight shape helps keep the cut focused where you need it, and the 2-1/4 inch blade length gives useful reach for joint work without stepping up to a bulkier accessory.

Material matters on accessories like this, and this blade is made from steel. That is important because sealant removal can be repetitive, dirty work that quickly exposes weak accessories. Fein positions this as a high-quality replacement blade with professional-grade performance, clean cutting, and solid service life, which is exactly what you want when the blade is the part taking the abuse.

This is also a practical buy for crews and contractors because it comes as a 5-pack. If expansion joint work is part of your regular workflow, a multi-pack saves downtime and keeps replacements on hand. Instead of stopping the job after one worn blade, you have four more ready to go.

Compatibility is straightforward and important here: this blade is for Fein Supercut only. That makes this a tool-specific accessory, not a universal-fit oscillating blade for every platform. If you already run a Fein Supercut and need a dedicated sealant cutting blade, that clear fitment is a plus. If you use another oscillating platform, you should not assume it will fit.

This blade makes the most sense for concrete repair crews, remodeling pros, maintenance teams, and contractors handling expansion joint cleanup and resealing. It can also work for serious DIY users who already own a Fein Supercut and want the correct accessory for the job. Bottom line: this is not the blade you buy for random cut-anything tasks. It is the one you buy when joint removal is the work and you want the right accessory instead of making a general blade do a specialized job.

Fein 63903117015 Type 117 Straight Universal Cutter Blade (5-Pack) is the right blade when joint removal is the whole point

This is a smart buy for Fein Supercut owners who want a dedicated blade for expansion joint and sealant removal instead of forcing a general accessory to do specialty work.

• Who it's for: Contractors, maintenance crews, and serious users already on the Fein Supercut platform doing joint cleanout or resealing prep.
• Why it stands out: It is purpose-built for expansion joints, made from steel, and sold as a 5-pack so it fits real work instead of one-off use.
• Worth knowing: This is not a universal-fit blade across every oscillating tool. Compatibility is listed for Fein Supercut only.

• What is this blade designed to cut? It is designed for removing almost all expansion joints and is described as a very efficient sealant cutting blade.
• What tool does it fit? Compatibility is listed for Fein Supercut only.
• What is the blade made from? The blade material is steel.
• How long is the blade? The blade length is 2-1/4 inches.