Convert any Foredom® flex shaft handpiece into a duplex style in seconds and gain the extra maneuverability and flexibility without the expense of a separate handpiece. If you already use a duplex handpiece, you know what a disruption to your productivity a broken spring can cause. With this adapter, when a spring breaks, you have options that keep you working: simply continue temporarily without duplex capability or easily move the adapter to convert another handpieces to duplex capability. Dimensions: 7-5/8"L x 11/16" dia. Brand: Foredom Shipping Weight: 4.559 ounces (129.24g) Country of Origin: United States eatures & Maintenance • Duplex springs should never be bent beyond 30° to help prevent breakage of the spring. TIP: Always keep an extra duplex spring on hand to be prepared in the event of a broken spring.