JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 6H - M30 x 3.5 ER Mini Collet Chucks 45° Helix for Strong Cutting

45° Helix for Strong Cutting and Chip Evacuation: The angled geometry strengthens the edge and channels chips away efficiently

controlled cutting in tight cavities and intricate contours

The 2-flute configuration provides efficient material removal and steady progression through generous radii and smooth transitions

and dedicated hobbyists who require precise hole finishing

45 mm flute length

JBO Thread Plug Gauge - Metric Coarse Go/No-Go - Left Hand - 6H - M30 x 3.5 ER Mini Collet Chucks 45° Helix for Strong CuttingJBO 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