Irwin 07-7104 18mm bi-metal jigsaw blades, pack of 50

Irwin 07-7104 18mm bi-metal jigsaw blades, pack of 50 are a set of universally compatible T-shank blades designed for cutting wood, metal and mixed materials. Each blade features a bi-metal construction that combines flexibility and hardness to extend blade life and resist breakage during demanding cuts. The 18 mm blade width provides stability and accurate tracking in the jigsaw slot, making this pack suitable for jobs that require frequent blade changes and consistent cutting performance.

Advantages

The bi-metal composition delivers improved durability compared with standard carbon blades while retaining enough flexibility to withstand bending stresses. A consistent 18 mm width ensures secure engagement in compatible jigsaws and reduces vibration for more precise cutting. Supplied in a pack of 50, the set reduces downtime for professionals and hobbyists by providing multiple replacements for repetitive or high-wear applications.

Suitable for

• General woodworking: timber, plywood and laminated boards
• Sheet metal cutting and light fabrication
• Renovation and repair tasks requiring fast blade changes
• Projects combining wood and metal where a versatile blade is needed

Key specifications

• Blade material: bi-metal construction (high-speed steel edge bonded to flexible backing)
• Blade width: 18 mm
• Shank type: T-shank compatible with standard jigsaws
• Quantity: 50 blades per pack
• Design focus: balanced flexibility and hardness for durability and reduced breakage

How to use

Select a blade from the pack that matches the material and required cut profile. Fit the T-shank blade into the jigsaw according to the tool manufacturer's instructions, ensuring it is fully seated and secured. Adjust jigsaw speed and feed rate to suit the material being cut: slower speeds for metals and faster for most woods. Replace blades as they dull to maintain cutting accuracy and prevent excessive motor load.

Usage recommendations

For best results, match blade tooth pitch to material thickness—finer teeth for thin sheet metal and thin plywood, coarser teeth for thicker timber. Wear appropriate personal protective equipment, clamp workpieces securely, and allow blades to cool when cutting metals to extend service life.