Used for milling, turning, tapping, grooves. Glued to stainless steel, steel parts; Positive cutting action threading inserts that help reduce cutting force. 4 usable cutting edges of the same sharpness. High-strength carbide metals and exquisite workmanship lead to a longer service life. Good abrasion resistance and toughness. Technical data: Model: 11IR A60 Material: carbide Size: 9.6 x 3.6 x 2.5 mm / 0.38 x 0.14 x 0.098 inch (manual measurement 1-3 mm error). Colour: gold Quantity: 10 pieces. Blade description: 11 = the blade size (the length of one side of the blade). IR = internal thread left cutter. A60 = 60 degrees in general. Packaging: plastic box (yellow, red, blue random) Package contents: 10 x CNC carbide tips inserts.