The CT-QT SPLINE(20) 5/8X18 from Field Tool Supply is a high-performance spline tool designed for precision applications. With a size specification of 5/8X18, this tool is engineered for efficiency and accuracy in various materials. Constructed from premium-grade materials, it offers exceptional durability and performance. This tool is ideal for use in industrial applications, ensuring reliable results in both professional and DIY projects. Its design allows for compatibility with standard drilling equipment, making it a versatile addition to any workshop.