Stanley 21-161a Surform Blade 10 in Half Round 10-pack

Product Description

The STANLEY 21-161a is a half round Surform replacement blade designed for use in compatible Stanley Surform shaping tools. Measuring 10 inches in length with a single-edged cutting profile, this blade is built for material removal on wood, plastic, drywall, and soft metals. Each order includes 10 blades, giving technicians and tradespeople a ready supply for sustained work. The blade features no finish coating, keeping the cutting teeth exposed for consistent, aggressive stock removal. At 0.09 pounds per blade, the lightweight construction does not add fatigue during extended use. Woodworkers, finish carpenters, and general tradespeople install and replace these blades as part of routine shaping and contouring work.

This blade is suited for residential and light commercial applications where hand shaping, rasping, or contouring is required. The half round profile makes it effective for working inside curves, concave surfaces, and irregular contours that flat blades cannot reach. It is commonly used during trim installation, door fitting, foam insulation shaping, and body filler work. The 10-blade pack supports job-site use where blade replacement is frequent and having spares on hand reduces downtime.

Key Features

• Half round profile for contouring and curved surface work
• 10-inch blade length for full-stroke material removal
• Single-edged design for controlled, directional cutting
• No finish coating for consistent, unobstructed cutting performance
• 10 blades per pack for extended job-site use

Compatibility

Designed as an OEM-style replacement blade for Stanley Surform half round shaping tools. Confirm handle model compatibility before installation.

Installation Notes

Blade replacement on Surform tools requires no special trade license but should be performed with care to avoid contact with the single-edged cutting teeth. Ensure the tool is not in use and is held securely before removing or seating the blade. Follow the tool manufacturer's blade-change procedure to confirm the blade is fully seated and locked before resuming work.

Technical Specifications

• Blade Length: 10 inches
• Profile: Half Round
• Edge Type: Single Edged
• Number of Blades: 10
• Finish Coating: None
• Weight: 0.09 pounds

Standard Information

• Brand: STANLEY
• Manufacturer Part Number: 21-161a