Standard specifications are those that are used for most purchases. In order to develop standard specifications, an agency may examine the characteristics and needs for products, solutions or services of similar end usage and develop a single specification that will satisfy the need for most purchases. Standard specifications are created for the express purpose of establishing performance and quality levels. Standard specifications may be particularly useful for commonly used items. Standard specifications may also reduce the variety of items being purchased, thus facilitating the consolidation of requirements into larger volume bids. Standard specifications eliminate duplicative specification writing.