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A. It is a metric roller set for R60 and R110 thread reform tools, configured specifically to restore 1.75 mm left-hand pitch external threads.
A. They should use this set whenever a damaged external left-hand metric thread needs non-cutting repair at 1.75 mm pitch.
A. They are fitted into the R60 or R110 head following the layout for 1.75 mm left-hand threads described in the tool documentation.
A. Using left-hand rollers on a right-hand thread can distort the profile, so direction must match before beginning any thread reform operation.
A. The set is supplied in a compact pack around 50 x 50 x 50 mm, making identification and storage straightforward.
A. Yes, as long as they share a 1.75 mm pitch and fall within the R60 or R110 tool’s supported diameter range.
A. They should check that the thread is left-hand, measure pitch at 1.75 mm and then select this matching roller set.
A. It reforms the existing thread, preserving shaft diameter and often improving surface finish without weakening the component.
A. Clean them, apply a light protective oil and store them in their clearly labelled container to avoid mixing with other pitches.
A. Yes, it can be used wherever 1.75 mm left-hand metric threads exist within the capabilities of the R60 or R110 tools."
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