The CMT Contractor ITK Plus Finish Saw Blade - 4-1/2" Diameter, 24 Teeth, ATB+SHEAR is a precision-ground circular saw blade engineered for compact cordless circular saws and portable table saws. Built with a 24-tooth alternate top bevel plus shear tooth geometry, this small-diameter finish blade delivers clean, splinter-free cuts in hardwood, softwood, and plywood. The thin kerf design reduces waste and demands less power from cordless tools, making it an ideal match for battery-powered saws where efficiency matters. Whether you are trimming finish carpentry details or making precise crosscuts in sheet goods, this CMT blade is purpose-built for fine woodworking results in a compact 115mm format.

Key Features

• 24-Tooth ATB+SHEAR Grind (10 ATB + 8 deg. Shear) - the combination of alternate top bevel and shear geometry slices wood fibers cleanly at the entry and exit face, dramatically reducing tearout on hardwood, softwood, and plywood surfaces for finish-quality results.
• 20 deg. Hook (Cutting) Angle - a controlled positive hook angle feeds material smoothly and consistently, giving the user confident, chatter-free cutting performance on compact saws.
• Thin 0.059" Kerf with 0.039" Plate - the narrow kerf removes less material per pass, reducing drag on the motor of cordless tools and extending battery runtime while minimizing waste in expensive hardwoods.
• HW (Tungsten Carbide) Tooth Material - industrial-grade carbide tips stay sharp longer under repeated cuts in dense hardwoods and abrasive sheet goods, extending the interval between resharpenings.
• Orange Chrome Coating - a chromium layer electrolytically deposited on the blade body increases wear resistance, protects against corrosion, and helps the plate slide through material with reduced friction and heat buildup.
• Precision Sharpening on Every Tooth - each tooth is individually sharpened to tight tolerances, ensuring consistent cut quality from the first pass to the last and a longer usable blade life.
• Laser-Cut Steel Plate - laser cutting achieves tight dimensional tolerances in the body, contributing to stable tracking, reduced vibration, and more accurate cuts across all supported materials.
• Filled Sound-Dampening Slots - polymer-filled laser-cut slots in the plate absorb vibration and reduce operational noise, improving comfort during extended use on job sites.
• Tri-Metal Silver Brazing - a Silver-Copper-Silver brazing process bonds carbide tips to the plate with exceptional strength, keeping teeth secure under the stress of high-speed cutting.
• 3/8" Bore Diameter (9.5mm) - matches the standard arbor size of popular compact circular saws and cordless trim saws, enabling direct drop-in installation without adapters.

Why This Product

• At 4-1/2" (115mm) in diameter with a 3/8" bore, this blade is specifically sized for compact and cordless circular saws - a category of tool that demands blades engineered to the correct arbor size and diameter rather than adapted down from larger formats.
• The ATB+SHEAR tooth geometry (10 ATB + 8 deg. Shear) is designed for finish-grade cutting, meaning it produces the smooth, tearout-free edge surfaces required in trim work, furniture, and plywood paneling - applications where blade marks or splintering are unacceptable.
• The thin 0.059" kerf and 0.039" plate are purposefully chosen for battery-powered tool compatibility - less material removed per cut means less load on the motor, translating directly into longer battery life per charge cycle during finish carpentry tasks.
• Industrial tungsten carbide (HW) tooth material combined with precision individual-tooth sharpening means this blade holds its edge longer in dense hardwoods and composite materials, reducing the frequency of blade swaps or resharpening on the job.

Specifications

• Manufacturer Part Number: 272.115.24
• Brand: CMT Orange Tools
• Diameter: 4-1/2" (115mm)
• Bore Diameter: 3/8" (9.5mm)
• Number of Teeth: 24
• Tooth Grind: ATB+SHEAR
• Sharpening Detail: 10 ATB + 8 SHEAR
• Cutting Angle: 20 deg.
• Kerf Thickness: 0.059"
• Plate Thickness: 0.039"
• Tooth Material: HW (Tungsten Carbide)

Approved Applications

• Ripping solid hardwood and softwood lumber
• Crosscutting hardwood, softwood, and plywood
• Finish cuts in hardwood where tearout-free surfaces are required
• Sheet goods and plywood panel cuts
• Compact cordless circular saw use
• Portable table saw applications

Frequently Asked Questions

What does the ATB+SHEAR tooth geometry mean and why does it matter for finish cuts?

ATB stands for Alternate Top Bevel, meaning every other tooth is ground at opposing angles across the top. The added shear component - in this blade, 10 deg. ATB combined with 8 deg. shear - tilts the cutting edge so it slices wood fibers rather than scraping them. This slicing action is what produces clean entry and exit surfaces with minimal tearout, which is essential for visible finish-quality woodworking in hardwood, softwood, and plywood.

What saws is this blade compatible with?

This blade is designed for compact circular saws and portable table saws with a 3/8" (9.5mm) arbor and a blade diameter capacity of 4-1/2" (115mm). It is particularly well suited to cordless compact circular saws where the thin 0.059" kerf reduces load on the motor and extends battery runtime.

What materials can this blade cut?

This blade is suited for hardwood, softwood, and plywood. The tungsten carbide (HW) tooth material and ATB+SHEAR geometry handle the range of grain structures and surface veneers found in these materials while maintaining clean cut edges. It is not intended for cutting metal, masonry, or plastic.

What is the difference between kerf thickness and plate thickness on this blade?

The kerf thickness (0.059") is the width of the cut slot the blade removes from the material - determined by the carbide teeth, which are slightly wider than the plate. The plate thickness (0.039") is the thickness of the steel body of the blade itself. The difference between the two (the "side clearance") allows the plate to move freely through the cut without binding. The thin plate also contributes to reduced vibration and straighter tracking during cuts.