The Ripley Miller 37884 is a consumable replacement blade assembly (model CB-251K) for the Miller ACS family of armored cable slitters. Made from special alloyed tool steel that has been hardened specifically for cutting steel, copper, and aluminum cable armoring, this blade delivers the same cutting performance as the original factory-installed blade. It is the correct service part for telecom technicians, cable splicers, and fiber optic installers who depend on the ACS tool for longitudinal, circumferential, and spiral cuts during mid-span access or end-of-cable preparation.

The blade uses a D-shaped profile that indexes precisely into the matching keyway inside the ACS tool body, ensuring correct alignment and repeatable depth setting every time the blade is replaced. On the ACS and ACS+ tools, depth is adjustable in 0.1mm (0.004") increments per click, with a full knob rotation providing 1.1mm (0.042") of travel and a maximum depth of 5.5mm (0.215") — all of which is preserved after swapping in a new blade. Manufactured in the USA, the CB-251K maintains the same tight tolerances and material hardness as the original equipment blade.

This blade assembly is compatible with the full ACS slitter lineup, including the ACS (37880, cable range 8mm–28.6mm), ACS-2 (37897, cable range 4mm–10mm), ACS-K kit (37899), and ACS+ / MB05-7000 series (cable range 4mm–28.6mm). Having a spare blade on hand prevents downtime during multi-fiber cable termination work where consistent armor removal is critical to fiber protection.

• Blade model CB-251K — the factory-correct replacement for ACS, ACS-2, ACS-K, and ACS+ armored cable slitters
• Special alloyed tool steel, hardened for cutting corrugated steel, copper, and aluminum cable armor without dulling prematurely
• D-shaped profile keys into the tool body for precise, repeatable alignment — no guesswork on installation
• Supports all ACS cutting modes: longitudinal slitting, circumferential ring cuts, and spiral cuts for mid-span access
• Compatible with armored multi-fiber cables including loose tube, stranded loose tube, ADSS, and armored central tube designs
• Made in USA