JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M18 x 0.5 Morse Taper Adaptor This reamer delivers tight dimensional

This reamer delivers tight dimensional control and a clean bore

thanks to its HSS‑E (M35 cobalt) construction

while HSS M2 offers a strong balance of hardness and toughness for repeated use

the carbide construction and optimized rake reduce wear and downtime

ensuring secure tool holding during demanding milling

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M18 x 0.5 Morse Taper Adaptor This reamer delivers tight dimensionalJBO Thread Plug Gauge is a precision Go No Go gauge designed for metric fine internal threads. This left hand version is tuned for M18 x 0. 5 with a 6H tolerance, making it ideal for quality critical holes in machining, assembly, and maintenance tasks. Built for real world shop use, the gauge features a knurled body for a secure grip and ends machined to exact Go No Go specifications. Crafted from hardened steel, it delivers long lasting wear