A good quality grade stake should meet certain criteria to ensure accuracy and reliability in construction and surveying projects. Here are some factors that determine a good quality grade stake:

Material: Grade stakes can be made of various materials, such as wood or metal. A good quality grade stake should be made of durable materials that can withstand exposure to the elements and heavy construction activities without warping, bending, or breaking.
Size: Grade stakes should be of a standard size to ensure consistency and ease of use. Typically, grade stakes are 1″ x 2″ x 24″ or 1″ x 2″ x 36″ in size.
Accuracy: A good quality grade stake should be accurately marked with the correct elevation or slope measurement. The markings should be clearly visible and easy to read, even in low light conditions.
Stability: Grade stakes should be able to remain stable and upright in the ground, even when subjected to wind or other environmental factors. A good quality grade stake may have a pointed end or be coated with a material to help it stay in place.
Longevity: A good quality grade stake should be able to maintain its accuracy and stability over a long period of time. This means it should be resistant to decay, rust, or other forms of damage that can compromise its reliability.
Cost: Finally, a good quality grade stake should be reasonably priced and provide good value for its cost. While cheaper stakes may be available, they may not meet the same standards for durability, accuracy, or longevity, and may end up costing more in the long run due to errors or rework.