The Festool Depth Position Indicator & Clamp Accessory Kit (item number 578697) bundles the FS-EP depth position indicator with two FS-EZ 150 one-hand clamps in a single Systainer case. This is a guide rail accessory kit designed for track saw users who need precise, repeatable plunge cuts and a fast way to lock the rail down before cutting. It's built specifically for the Festool TS 55 R, TS 55 F, TSC 55, TSC 55 K, and TSC 55 KS track saws running on FS-series guide rails.

The FS-EP indicator is the core of the kit. It mounts to either side of the guide rail using magnetic positioning and shows exactly where the blade will enter and exit the material at your current cutting depth — including cut-outs made close to a wall, where you can't see or reach the far end of the rail to check yourself. It also works as a cutting width indicator, which matters when you're ripping narrow panel strips or working off the cut-off side of the rail rather than the guide side, and it doubles as a front and rear stop on the rail for consistent, repeatable plunge cuts across multiple parts.

The two FS-EZ 150 one-hand clamps handle the other half of the setup: getting the guide rail locked to the workpiece without needing a second person or a free hand to hold things steady. Each clamp secures the rail or spreads a workpiece in one motion, which keeps the cut controlled and repeatable instead of shifting mid-pass because the rail moved.

Everything — the indicator, both clamps, and any leftover space — packs into a Systainer SYS3 M 112, which stacks and locks with Festool's broader Systainer storage line and connects to your dust extractor cart the same way the rest of your track saw accessories do. There's enough room left inside for spare saw blades and FS rail connectors, so the whole plunge-cut kit — indicator, clamps, blades, connectors — moves as one unit between the shop and the truck.

This kit makes sense for anyone running a TS 55 or TSC 55 track saw who does a lot of plunge-cut work — cut-outs for sinks, outlets, or vents, cabinet installs, or repeatable panel cuts where hitting the same entry and exit point matters. If you only make the occasional crosscut with the rail and don't need precise cut-outs or single-handed clamping, this add-on kit is more setup than you need; it earns its place on a truck that's doing plunge cuts regularly.

The Plunge-Cut Setup You Stop Cobbling Together

The Festool Depth Position Indicator & Clamp Accessory Kit takes three things you'd otherwise buy separately — an indicator and two clamps — and hands them to you already organized in one case.

• Who it's for: TS 55 and TSC 55 owners who make plunge cuts and cut-outs regularly and are tired of eyeballing entry and exit points.
• Why it stands out: The FS-EP indicator's magnetic mount and close-to-wall accuracy solve a specific, real problem — most guide rail setups make you guess at blind cuts.
• Worth knowing: This is an add-on kit for a rail and saw you already own — the TS 55 or TSC 55 and the FS guide rail aren't included.

• Which track saws does this fit? The kit is built for the Festool TS 55 R, TS 55 F, TSC 55, TSC 55 K, and TSC 55 KS.
• Does the depth indicator work close to a wall? Yes — it's designed to show the blade's exact entry and exit points even in cut-outs made close to a wall, where you can't see the far end of the rail.
• How many clamps come with the kit? Two FS-EZ 150 one-hand clamps, along with the FS-EP indicator and the Systainer case.
• Does this include the guide rail or saw? No. This kit outfits a guide rail and track saw you already have; the rail and saw are sold separately.