Features: brand new and high quality brand new and high quality Material: Use high-quality high-carbon steel materials (mainly used in woodworking industry). Surface treatment: for Titanium plating, used for rust prevention, more beautiful, and increase surface hardness. Easy to Use: A , five-flute designed with staggered cutting teeth arranged to insure chip flow and rapid cutting. Application: Good performance, convenient and practical, suitable for home and professional use. Lightweight Size: Portable and small size, easy to store and carry, bring you convenience. Specifications: Material: Carbon Steel Color: As the Picture Shows Type：6Pcs, 6MM 8MM 9mm, 13/16/19mm or 12/16/19mm( Random Delivery） Net Weight: 125g/0.28lbs 41g/0.09lbs 81g/0.18lbs Package Includes: 1Set Plastic Wood Chamfering Knife Hole Opener note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.