Item Type: Boring Bar <br>Quantity: 9Pcs <br>Material: High speed steel <br>Base Size: Approx. 72 x 55 x 30mm / 2.8 x 2.2 x 1.2in <br>Base diameterHeightDrilling depthSmallest hole <br>12mm / 1/2in57.1mm / 2.2in19mm / 0.7in7.9mm / 0.3in <br>12mm / 1/2in66.6mm / 2.6in28.5mm / 1.1in7.9mm / 0.3in <br>12mm / 1/2in76.2mm / 3in38.1mm / 1.5in7.9mm / 0.3in <br>12mm / 1/2in66.6mm / 2.6in28.5mm / 1.1in11.1mm / 0.4in <br>12mm / 1/2in80.9mm / 3.2in42.8mm / 1.7in11.1mm / 0.4in <br>12mm / 1/2in95.2mm / 3.7in57.15mm / 2.3in11.1mm / 0.4in <br>12mm / 1/2in76.2mm / 3in38.1mm / 1.5in13mm / 0.5in <br>12mm / 1/2in95.2mm / 3.7in57.1mm / 2.2in13mm / 0.5in <br>12mm / 1/2in114.3mm / 4.5in76.2mm / 3in13mm / 0.5in <br> <br>1、Made of high-speed steel, durable and long service life <br>2、With 9pcs boring tools of different lengths, it can satisfy your use <br>3、Including base, the boring bar is convenient to store and easy to carry <br>4、The diameter is 12mm which is easy to install and remove <br>5、High quality and great workmanship, simple to replace9 x&nbsp;Boring Bar