15pcs ER11 Precision Spring Collet Set Milling Lathe CNC Chuck Bit Holder Tool

Features: * Brand new and high quality *Made of high quality materials, sturdy and * Equipped with BT ER extension handle, which can be used to clamp drill bits, milling cutters, and straight-shank tools. * Stable performance, high for precision and wear resistance. * Large clamping force and wide clamping range. * Spiral chucks are widely used in boring, milling, drilling, tapping, grinding, engraving, etc. Specification: Color: as shown in the picture Dimensions: 11.5 x 7 x 3 cm (approx.) Material: steel. Accuracy: 0.0003" or 5um Clamping range: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 1/4", 1/8" Quantity: 15pcs Package Included: 15 x ER11 chuck (1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 1/8", 1/4") Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.