The Ripley Cablematic 33668 is the replacement coring blade kit (model CB 143K) for the QRT 540 Coring & Stripping Tool, designed for use with 0.540-inch diameter coaxial cable. This is the consumable cutting component responsible for coring the foam dielectric during connector termination prep, allowing field technicians to restore their QRT 540 to factory-sharp performance without replacing the entire coring bit assembly. It is the correct replacement for both the standard T-handle QRT 540 (part #34641) and the ratchet T-handle QRT-540-R (part #33508).

The QRT 540 tool performs four simultaneous operations in a single pass — jacket stripping, dielectric coring, aluminum sheath stripping, and center conductor trimming to length — and this blade is central to that coring function. When the blade dulls from repeated use, cable prep quality degrades, making timely blade replacement critical for clean, consistent terminations. The CB 143K blade features a heat-treated construction with a smooth beveled cutting edge for precise, repeatable coring to the specified 1-1/4" depth on .540" CommScope QR-series and compatible cables.

The QRT series uses a unique coring blade kit matched to each cable diameter — the CB 143K is specific to the QRT 540 and is not interchangeable with blades for other QRT models such as the CB 164K (QRT 320), CB 130K (QRT 500), or CB 127K (QRT 860). Technicians working with multiple QRT tools should verify the correct blade kit before ordering. Related replacement parts for the QRT 540 include the Guide Sleeve (part #33787), Aluminum Sheath Blade (CB 60), and Jacket Blade (CB 6667H).

• Replacement coring blade kit CB 143K — the correct consumable for the Ripley Cablematic QRT 540 Coring & Stripping Tool
• Designed for 0.540" coaxial cable including CommScope Quantum Reach (QR), Times Fiber TFC TX10, and Alcatel Cable Benelux ACW cables
• Heat-treated blade with smooth, beveled cutting edge for accurate dielectric coring to 1-1/4" depth
• Restores QRT 540 coring performance without replacing the full coring bit assembly or the tool itself
• Compatible with both the standard T-handle QRT 540 (#34641) and the ratchet T-handle QRT-540-R (#33508)
• Part of the Ripley QRT series blade system — blade kit number is cable-size specific, ensuring correct fit and prep geometry