Model Number:YHG8teavzg3i-1 Product Dimensions:7 x 4 x 2 cm; 30 Grams Material:Carbon Steel Item Weight:30 g Features:- Drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life.- Combined drill bit and countersink bit is great for drilling, chamfering, deburring and countersinking.- There are7 sizes of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mmdrill bit with 1 pc of- Five flutes design provides small chip loads and quicker removal, it can discharge wood sawdust more rapidly and smoothly.- Suitable for drilling holes on board of low hardness such as wood, plastic and other soft material.Specifications:Material: Carbon steel(drill bit), 45# steel(countersink)Countersink Flute: 5Drill Bit Diameter: 3/4/5/6/7/8/10mmCountersink Diameter: 15.8mmHex Key Size: 55 x 20mmQuantity: Your choicePackage Includes:1 set * Countersink Drill Bit1 * Hex Key About this item [Material]: The drill bit set is made from carbon steel and countersink is made from good quality 45# steel, which has high hardness, excellent cutting power and good wear resistance, ensures a long service life [Multifunctional]: Suitable for bench drill, hand drill and conventional electric drill; Perfect for wood, fiberboard, particleboard, plywood, plastic, PVC, rubber etc [Features]: Five flutes design cuts and clears chips quicker for fast, smooth countersinking; the countersink works effortlessly even after many uses; it makes clean and consistent tapered holes for screws [Removable and Adjustable]: It is easy to adjust or disassemble the countersink drill bit and the five-flutes chamfering with the provided L-shape hex key [Package Includes]: Set include 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and 1 free Hex Key Wrench;100% satisfaction guarantee [Material] [Multifunctional] [Features] [Removable and Adjustable] [Package Includes]