Description
The ROBERT BOSCH TOOL GROUP OSL400F is a 4-inch segmented bi-metal saw blade designed for oscillating multi-tool use. Built from bi-metal construction, it handles both wood and metal in a single pass, making it a practical choice for cutting through mixed materials on the job. The 4-inch cutting area provides wide coverage suited to tasks where a standard-width blade falls short. Licensed tradespeople and experienced finish installers rely on this blade when precision and material versatility are both required in tight work areas.
This blade is well suited to finish carpentry and door installation work, particularly when cutting door jambs and trim in place. Its large diameter allows wide cuts without repositioning, reducing time on repetitive trim cuts. The segmented design helps clear debris and reduces heat buildup during extended cuts through nails or fasteners embedded in wood trim. It fits oscillating multi-tool platforms that accept standard accessory mounting systems.
Key Features
- 4-inch cutting area provides wide coverage for door jambs and trim work
- Bi-metal construction cuts through wood and metal including embedded nails
- Segmented blade geometry aids debris clearance and reduces heat during use
- Large diameter supports wide cuts without multiple repositioning passes
- Single-piece per package easy to stock and reorder by unit
Compatibility
Designed as an OEM-style replacement or upgrade blade for oscillating multi-tools that accept standard segmented saw blade accessories.
Installation Notes
Blade changes on oscillating multi-tools should be performed with the tool powered off and unplugged or battery removed. Confirm the blade mounting interface matches the tool before installing. Always wear appropriate eye and hand protection when cutting through materials containing embedded fasteners. Follow applicable OSHA hand tool safety guidelines when operating oscillating cutting tools on the job site.
Technical Specifications
- Blade Diameter: 4 inches
- Blade Type: Segmented
- Material Compatibility: Wood and Metal
- Construction: Bi-Metal
- Tool Type: Oscillating Multi-Tool
- Package Quantity: 1
- Weight: 0.08 pounds
Standard Information
- Brand: ROBERT BOSCH TOOL GROUP
- Manufacturer Part Number: OSL400F









