(1) knob only as shown, this part is what is used to secure the fabric warp beam to the side piece in each of the four corners. You will need s screw, not included. Used, good condition, great replacement if you are missing yours because it got lost or broken. This is an OEM part pulled from an actual Beka Loom model SG-20. From a smoke-free and pet-free warehouse. You will receive exactly what is pictured/photographed. Tip: mouse over or click on the photo to view a pop-up of an enlarged version of the photo to see all the details! We guarantee your satisfaction with your purchase or your money back! You can purchase from us with confidence, we have sold over 6,000 items to happy buyers just like you. Most buyers receive their order within 2-4 business days of payment. And we pack every item with care to ensure you receive it in the same condition as is described and photographed in the listing! Questions are welcome, we will reply quickly.