This kit contains everything you need for accurate blood pressure readings. The Gold Series DS66 Trigger Aneroid features gear-free DuraShock technology, the first major innovation in aneroid technology in nearly 100 years. It promises a longer life at a lower cost. The Welch Allyn DS66 Trigger features an innovative trigger-release design for easy operation. It is shock resistant and can withstand up to 3" drop and remain in calibration. The kit includes adulat and child-sized cuffs and a handy carrying case.