Specifications Material High Speed Steel HSS Shank Size 1 8 inch 3mm Bits Length 39mm 1 53 inches Quantity 20 piecesFunctionality Engraving carving hollowing chamfering shaping reaming grooving drilling and bevelingCompatibility Suitable for most rotary tools such as Dremel Apollo Chicago with 1 8 inch chuckFeatures 1 High Speed Steel ConstructionEnsures heat resistance and superior hardness for precise woodworking tasks 2 Ergonomic and Easy to HandleDesigned for comfort and control enabling smooth and accurate carving operations 3 Versatile ApplicationSupports engraving hollowing shaping and more perfect for detailed woodworking projects 4 Universal FitCompatible with rotary tools equipped with 1 8 inch chuck for extensive usability 5 Chemical Free ProductionManufactured without high concern chemicals to promote a safe working environment 6 Applicable material woodPackage Included 10 x Engraving Bits10 x Rotary Files