Drill Tool Gauge for Handling Drill Collar Tricone Bit Ring Gauge. Aluminum Alloy Shell: Anti-corrosion design that significantly reduces the self-weight of the gauge body. Wide Measuring Range: Covers 130mm-320mm and 270mm-510mm, extending beyond original bit gage limits. High Precision: Ensures accurate measurements with a precision of 1mm for various drill tools. Versatile Application: Measures bits, stabilizers, collars, pipes, and fishing tools within its range. Fast Stock Delivery: Only 2-3 days production time if stock is available for requested sizes. Lifetime Technical Support: Technical support available anytime with free replacement for quality issues. Global Export Experience: Products exported to USA, South America, Africa, Japan, Singapore, and more.