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Bosch StarLock 3-1/2 in. X 4 in. L Carbide Grit Grout Blade

Bosch StarLock 3-1/2 in. X 4 in. L Carbide Grit Grout Blade

The Bosch StarLock 3-1/2 in. x 4 in. L Carbide Grit Grout Blade is purpose-built for tile installers and serious DIYers who demand clean, precise grout cuts with less effort. Desig…

Bosch MPN OSL312CG
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Typical Store Price i
Typical store price: low $33.99, average $39.99
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About Product Overview

The Bosch StarLock 3-1/2 in. x 4 in. L Carbide Grit Grout Blade is purpose-built for tile installers and serious DIYers who demand clean, precise grout cuts with less effort. Designed to pair with StarLock and OIS-compatible oscillating tools, this blade delivers quick, tool-free mounting and a secure, wobble-free cut that keeps your grout lines straight from start to finish.

  • Carbide grit edge for enduring performance: The durable carbide‑grit surface is engineered to bite into grout with minimal loading, maintaining cutting efficiency through ceramic, porcelain, or cementitious grout without glazing over.
  • Optimal dimensions for tight grout work: With a 3-1/2 in diameter and a 4 in length, it reaches narrow grout lines and provides ample depth for clean removal and precise prep before re-grouting.
  • StarLock and OIS compatibility: Enjoy fast blade changes, a secure fit, and reduced vibration on compatible tools, so you can move from removal to re-grouting with minimal downtime.
  • Versatile tile-site applications: Ideal for bathrooms, kitchens, laundry rooms, and any tile installation where neat, true grout lines matter for both aesthetics and longevity.
  • Single-blade convenience in a clamshell package: Ready-to-use right out of the package, with one carbide grit grout blade included for immediate use on the job.

Why this blade stands out

Unlike standard blades, the carbide grit construction resists dulling when faced with tougher grout materials, helping you complete more cuts per blade. The StarLock interface ensures precise alignment and a secure hold, which translates to straighter grout lines and less touch-up work. This blade is particularly valuable for prep work before re-grouting, saving time and delivering a professional finish.

Best practices and actionable tips

For best results, follow these guidelines on your next tile project:

  • Align the blade with the grout line and use light, steady strokes to avoid chipping surrounding tiles.
  • Maintain a consistent pace to prevent heat buildup and edge gumming, which can slow cutting action.
  • When cutting epoxy grout or especially dense cementitious grout, apply gradual pressure and let the carbide grit do the work rather than forcing the blade.
  • After use, wipe the blade clean to remove debris and inspect the grit surface for wear before your next job.

The Details Specifications

Brand Bosch
SKU 2499291
UPC 000346480498
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 0 × 4 × 7
Weight 0 lbs
Cubic Feet 0.00596 ft³
Country of Origin SWITZERLAND
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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