This Rockwell 34-461 locking knob is a reliable and durable accessory for your Unisaw table saw. Crafted from high-quality materials, this locking knob ensures secure and precise adjustments during your woodworking projects. With compatibility for Rockwell brand table saws and a clear indication that it does not come with a battery, this accessory is a must-have for any woodworking enthusiast. Whether you are a beginner or a seasoned professional, the Rockwell 34-461 locking knob offers a reliable and efficient solution for your sawing needs.