CMT JS3456XF-20 Reciprocating Saw Blades for Wood and Metal are an 8-inch bi-metal (BIM) demolition blade set designed for contractors and tradespeople who need reliable performance cutting through wood with embedded nails, sheet metal, aluminum profiles, and fiberglass. This 20-piece pack delivers a progressive 6-12 TPI tooth pattern that transitions from aggressive coarse cutting to a finer finish, making the blades equally at home in framing teardowns, remodeling, and mixed-material demolition work. Each blade features a universal shank that fits all major reciprocating saw platforms, so switching tools on the job does not slow you down.

Key Features

• Bi-Metal (BIM) Construction with 8% Cobalt High-Speed Steel Teeth - high-speed steel teeth are bonded to a flexible spring-steel back, combining hardness at the cutting edge with resistance to blade snap during heavy-duty demolition and curved cuts.
• Progressive 6-12 TPI Tooth Pattern - the variable tooth pitch reduces vibration and harmonics during cutting, extends blade life, and enables smooth, fast material removal in both wood and light metal without swapping blades mid-task.
• 8-Inch Total Length with 7-Inch Cutting Length - the full 7 inches of usable cutting height provides deep reach into framing members, wall assemblies, and profiles up to 6 inches thick, keeping the cut controlled and the blade stable.
• Milled and Side-Set Teeth - precision tooth geometry produces fast chip clearance and efficient cutting strokes, reducing heat buildup and keeping the blade tracking straight through mixed-material cuts.
• Universal Shank Design - accepts all major reciprocating saw chucks without adapters or additional hardware, saving setup time and ensuring the blade seats securely at up to 2,500 RPM.
• 0.049-Inch Blade Thickness - a blade profile engineered for rigidity during straight demolition cuts while remaining thin enough to minimize binding in tight clearances or nail-embedded lumber.
• 20-Piece Value Pack - stocking up on blades before a large demolition or remodeling project reduces downtime from blade changes and keeps the work moving without waiting on resupply.

Why This Product

• The 6-12 progressive TPI design handles wood with nails, sheet metal, aluminum profiles, and fiberglass in a single blade - eliminating the need to carry multiple blade types for multi-material demolition jobs.
• At 8 inches long with a 7-inch cutting length, these blades reach deep into structural assemblies and can cut through material up to 6 inches thick, covering the majority of framing and demolition scenarios without requiring an extended blade upgrade.
• The BIM construction with a spring-steel back resists the flex and fatigue that causes premature blade breakage in aggressive reciprocating saw applications, meaning more cuts per blade and lower cost per linear foot of material removed.
• A 20-piece quantity makes this pack practical for contractors running multiple saws on a job site or for high-volume users who go through blades quickly during full-scale demolition - fewer reorders, less downtime.

Specifications

• Model Number: JS3456XF-20
• Brand: CMT Orange Tools
• Total Length: 8"
• Cutting Height: 7"
• Cutting Depth: 19mm
• Teeth Thickness: 0.049"
• Maximum Thickness: less than 6"
• Number of Teeth: 6-12 TPI
• Blade Material: Bi-Metal (BIM)
• Quantity: 20-Piece

Approved Applications

• Wood with embedded nails and mixed fasteners
• Sheet metal cutting
• Aluminum profiles
• Fiberglass and epoxy materials
• Demolition and coarse straight cuts
• Remodeling and structural teardown