The dual speed ED-DA model also has a quick disconnect hook, allowing for custom end effectors. The single-speed ED-V model has a Smart Speed Technology, which allows the user to change the factory set speed of 16 fpm (8 fpm for 1000 lb. capacity) to a higher speed, within each model's maximum range. Both models are lightweight and have low headroom to fit into tight areas. They are both easy to install, move and store. Call for details. FOB Shipping Point.