These M12 BT30x45 degree pull stud retention knobs are essential replacement components for CNC milling tool holders. Designed as direct replacements for worn or damaged parts, these retention knobs ensure secure tool holding and reliable performance in precision machining operations. Each pull stud features high-quality construction with precision threading and durable materials that withstand the demanding conditions of CNC machining environments. The set includes 5 pieces, providing convenient backup parts for your workshop or manufacturing facility. These retention knobs offer easy installation and stable performance, making them ideal for maintaining your CNC equipment. Before ordering, carefully compare the appearance, dimensions, and specifications with your original parts to ensure proper fitment. Every aspect of the component should match your existing hardware for optimal compatibility. These replacement parts are designed to meet the exacting standards required for professional machining applications, delivering the precision and reliability your operations demand.