Features: brand new and high quality. Fine process: This set of tools' surface has processed by iron, plastic, wood, copper, aluminum and other soft materials. High quality materials: This set of reamer is made of high quality and high speed steel materials, so these reamer cutters have high hardness. High working efficiency: This reamer set has for sharp cutting-edge, high efficiency cutting ability, high accuracy, so your work will become easier under the use of this tools set. Specific and professional use: This reamer set is designed for reaming to mold processing and handicraft processing. Wide using range: This whole set can be widely used for bore machining, installed in drilling machine, milling machine, etc. Specifications: Material: HSS Size: 3mm/4mm/5mm/6mm/7mm/8mm/9mm/10mm/11mm/12 mm Package Includes: 10x H7 HSS Machine Reamer note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.