JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M20 x 2 Hex Key Drill Chuck while the secure shrink-fit connection

while the secure shrink-fit connection and durable construction deliver consistent results you can trust across demanding jobs

ISO H5 tolerance on a standard-length reamer: Tight -0 to +0

delivering stable guidance and efficient material removal for metalworking projects

15 mm diameter taper-shank reamer made from M2 high-speed steel for reliable

Dispatch typically within 24–48 hours

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M20 x 2 Hex Key Drill Chuck while the secure shrink-fit connectionThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. Its specifically sized for M20 x 2 left hand internal threads, and uses a Go No Go design to quickly verify threaded holes during assembly or quality control. Built for durability in busy workshops, the gauge features hardened steel construction to resist wear and maintain accuracy across many uses, with a 6H internal thread tolerance reference to align with