JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M20 x 2 Hex Key Drill Chuck Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: Optimized chip evacuation and controlled cutting action for smooth

efficient chip control from the four-flute design

Carbide tooling delivers faster cutting speeds and longer edge life compared with high-speed steel

Carbide-tipped for extended wear life: The K10 carbide tip provides exceptional hardness and wear resistance

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

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M20 x 2 Hex Key Drill Chuck Left-hand spiral flute with right-handThe 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