PERFORMANCE: The Ball Gouge is a spherical wood carving tool designed to hollow small concave surfaces in woodworking projects. QUALITY: The Ball Gouge features a durable ring blade that is sharpenable, rotatable, and replaceable, providing long-lasting performance. It includes Anti-Grab Technology to help prevent the tool from digging into the wood. SIZE: The 40 mm diameter ball gouge is ideal for carving hollows in wooden spoons, small bowls, and is suitable for small to medium-scale sculpting projects. FITMENT: Woodworking grinding hole opener - M10 (compatible with 100 type grinder). MATERIAL: High-carbon steel. COLOR: Black. PACKAGE CONTENTS: 1 x Woodworking grinding hole opener Note: Other items not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.