Multiple Materials Compatibility: Works effectively on, and aluminum alloys, making it versatile for various modeling and crafting applications Hole Expansion: This high speed steel multistage alloy coated reamer hole expansion from 4mm to 12mm, eliminating frequent bit changes for model makers and craft enthusiasts User Friendly Design: angles reduces resistance during operate, providing smoother and reducing hand strain for beginners and hobbyists Durability alloy Coating: Features wear resistant alloy coating that increases durability by 50% and extends tool life by 60%, ideal for professional modelers working on complex projects Portable Storage Solution: Lightweight is for easy transport, perfect for model competitions or exhibitions, Manufacturer: Zxfdsfdbnm