Feature: Made of high quality alloy spring steel, they are stable in performance. Fine workmanship, good elasticity, high precision, big clamping force. This set comes with a MT2 shank holder and a wrench for easy use. Collets, holder and wrench are all well packed in a portable protective box. Widely used for CNC milling lathe tool and work-holding engraving machine. Spezifikations: Model: MT2-ER32Main Material: Alloy spring steel ER32 Collet: 3-2,4-3,(5-4)*2,8-7,10-9,12-11,14-13,16-15,18-17,20-19 ER32 Collet Size(D x H): 5 x 12.5cm/2 x 4.9in ER32 Collet Chuck Handle Diameter: 15.1mm/0.6inWrench Length: 20.5cm/8in Box Size: 33.5 x 28 x 9cm/13.2 x 11 x 3.5in Weight: 3.5kg(approx.) Package Includes: 1 x Storage Box 1 x MT2 Shank Holder (The Rod Head Color Will Be Black or White Random Shipping) 1 x Wrench 11 x ER32 Collets