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This is a Micro 100 RR-017-8 solid caroffere right-hand retaining ring (internal) grooving tool.
It is designed for cutting precise internal grooves (typically for retaining rings/circlips, O-rings, or similar seals) in bored holes. Key features from the manufacturer and distributors include a polished split face for better edge retention and chip evacuation, a sharp corner profile, and a lockdown flat that automatically centers the tool.
Travers
Main specifications
Groove (tooth) width: 0.017″
Projection (effective groove depth capability): 0.050″
Minimum bore diameter: 0.250″
Maximum bore depth: 0.500″
Centerline offset: 0.125″
Shank diameter: 0.250″ (1/4″)
Overall length: 2.50″
Material: Solid (micro-grain) caroffere, uncoated
Cutting direction: Right-hand
Made in USA
The orange plastic tube is the original protective packaging, clearly labeled “MICRO 100 super caroffere Made in U.S.A.” with the part number RR-017-8 and barcode. The tool itself shows the characteristic reduced neck and small square-profile cutting tip typical of these internal retaining-ring grooving tools.
It is intended for use on CNC or manual lathes for precision internal work in materials such as steel, stainless, high-temperature alloys, cast iron, and plastics. Coated versions (e.g., AlTiN) of similar tools are also available if longer tool life in tougher materials is needed.
