Studio view of the black Bosch OSM114K StarlockMax oscillating knife blade featuring a pink soft material icon and high-carbon steel body.
Dimension graphic of the sealant knife blade indicating a blade width of 1-1/4 inches and an overall length of 5-1/4 inches.
Close-up application shot of the knife blade slicing through caulk along a metal window frame with text stating ideal for hard-to-reach areas.
Graphic illustrating the Starlock quick change system where the tool snaps onto the blade in three seconds.
Instructional graphic demonstrating how to change Starlock blades by pulling the lever to release and snapping the new blade into place.
Compatibility chart showing that StarlockMax accessories are only compatible with StarlockMax tools and not standard Starlock or StarlockPlus tools.
High-angle action shot of the oscillating knife blade cutting through grey sealant in a concrete expansion joint.
A worker using a Bosch oscillating tool with the knife blade to remove vertical sealant from a window frame.
Studio view of the black Bosch OSM114K StarlockMax oscillating knife blade featuring a pink soft material icon and high-carbon steel body.
Dimension graphic of the sealant knife blade indicating a blade width of 1-1/4 inches and an overall length of 5-1/4 inches.
Close-up application shot of the knife blade slicing through caulk along a metal window frame with text stating ideal for hard-to-reach areas.
Graphic illustrating the Starlock quick change system where the tool snaps onto the blade in three seconds.
Instructional graphic demonstrating how to change Starlock blades by pulling the lever to release and snapping the new blade into place.
Compatibility chart showing that StarlockMax accessories are only compatible with StarlockMax tools and not standard Starlock or StarlockPlus tools.
High-angle action shot of the oscillating knife blade cutting through grey sealant in a concrete expansion joint.
A worker using a Bosch oscillating tool with the knife blade to remove vertical sealant from a window frame.
BOSCH

Bosch Multi Tool Blade OSM114K 1-1/4 Inch StarlockMax High Carbon Steel Oscillating Knife (Silicone Caulking Window Expansion Joint Sealant Removal)

Only 1 left
SKU: OSM114K
$13.89 USD

Description

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Heavy-Duty StarlockMax 1-1/4-Inch High Carbon Steel Oscillating Knife Blade with 3D Torque Transfer Interface and Segmented Flush-Cutting Geometry

The Bosch OSM114K 1-1/4 Inch StarlockMax Oscillating Knife Blade High Carbon Steel for Sealant Removal delivers specialized deep-gap architectural scraping utility and exceptional elastic material separation efficiency across demanding commercial expansion joint overhauls, automotive glass extractions, and structural window restorations. Engineered with premium Swiss-made high carbon steel precision-ground into a stable rectangular knife profile, this high-performance layout tool cleanly separates industrial-grade polyurethanes, marine caulks, structural silicones, and soft waterproofing membranes without binding or tracking distortion. This professional contractor solution resolves restricted workspace accessibility bottlenecks, frequent accessory mounting spin-out slips, and hand-arm vibration fatigue under heavy continuous shear stress by combining a specialized heavy-gauge three-dimensional StarlockMax connection interface with clear laser-etched wear paths, a 5-1/4 inch total structural tool reach length, and a substantial 3/8-inch blade body framework thickness. Outfitted with an essential 1-1/4 inch active horizontal slicing border, a resilient 0.3 lbs balanced operational hardware net mass, and universal compatibility tracking parameters mapped exclusively to high-output StarlockMax power heads, this robust oscillating scraper system optimizes subcontractor project metrics during deep structural cavity cleanouts, commercial window glazing extractions, and structural perimeter prep runs.

Best Used For:

  • Expansion Joint Maintenance: Slicing out aged, tough weatherproofing sealants natively down to 5-1/4 inches deep between structural concrete panels and commercial building foundations.
  • Automotive Glass Retrofitting: Cutting away thick, industrial-grade cured urethane adhesive tracks single-handedly along vehicle windshield perimeters without damaging underlying frame paint layers.
  • Commercial Window Refurbishing: Stripping away calcified caulking beads, thick industrial window sealants, and soft window compound backings cleanly from historical structural window casings.

Key Performance & Safety Features

  • StarlockMax 3D Connection Interface: Advanced three-dimensional contact seat maximizes direct mechanical energy transmission, absorbing massive power inputs while suppressing hand-arm vibration feedback.
  • High Carbon Steel Edge Matrix: Premium induction-tempered HCS core metallurgy isolates extreme friction wear loops completely, retaining razor-sharp layout border slices over long material stretches.
  • Integrated Rectangular Profiling Frame: Reinforced flush-cutting structural blade geometry provides continuous stabilization during flat structural carving cycles inside deep, narrow gaps.
  • Color-Coded Laser Identification: Bold color classification zones paired with hard laser-etched model stamps stop job site staging delays, permitting lightning-fast accessory type matching inside tool chests.
  • Swiss Mechanical Precision Assembly: Manufactured directly inside Swiss technical production facilities to secure strict industrial balance parameters, preventing edge drift errors under extreme load.

What's Included

  • (1) Bosch OSM114K StarlockMax® 1-1/4-Inch High Carbon Steel Oscillating Knife Blade Accessory

Technical Specifications

Specification Value
Brand Name Bosch
Model Number OSM114K
Product Classification Type Oscillating Multi-Tool Specialized Knife Blade
Primary Mechanical Connection Style StarlockMax® 3D Interface Connection
Active Knife Slicing Width 1-1/4 in. (1.25 in.)
Total Mechanical Tool Length 5-1/4 in. (5.25 in.)
Structural Matrix Core Thickness 3/8 in. (0.375 in.)
Primary Cutting Material Core Premium Grade High Carbon Steel (HCS)
Boring Blade Geometric Form Integrated Rectangular Flush-Cutting Knife
Target Application Materials Urethane Sealants, Cured Silicone, Caulk, Soft Compounds
Origin Factory Certification Swiss Made Precision Quality Assembly
Net Hardware Tool Net Weight 0.3 lbs.

Pro-Tip: When carving out dense Expansion caulks inside deep building channels, align the 3/8-inch flat backing layout wall perfectly flush against the primary concrete side surface before starting the motor. Allowing the high carbon steel edge to glide straightly at full tool OPM speeds checks binding friction forces and isolates the target sealant line cleanly without early edge glazing.