What is the thread size of the threaded rod on the Spyder Shelf? Boris Bergmann July 28, 2021 12:34 The Spyder Shelf comes with a standard 1/4"-20 UNC tripod mount. Related articles What is the weight capacity of the Spyder Shelf? How to use Spyder Shelf with Spyder X and other Spyder products? What does calibrate mean? How do you adjust legs on the Spyder Shelf? What Datacolor Spyder products can be used with the Spyder Tripod?