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Manufactured with intermediate precision carbide (K10)
45° Helix for Strong Cutting and Chip Evacuation: The angled geometry strengthens the edge and channels chips away efficiently
repeatable reaming without alignment issues
built for durable and accurate hole finishing
64mm delivers precise hole finishing to ISO H4 tolerance
JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 6H - M30 x 3.5 ER Mini Collet Chucks Manufactured with intermediate precision carbideJBO Thread Plug Gauge is a left hand, metric coarse, go no go plug gauge designed to verify M30 x 3. 5 threaded holes. Built for engineers, buyers, tradespeople, and hobbyists, it provides a fast, reliable check that ensures holes will accept components before assembly. This hardened steel gauge delivers consistent inspections and long service life in demanding workshop environments. Fast, go no go verification: Quickly confirm whether a threaded hole
