Both EPX.XT RDM 36 and SDM 42 come at a very attractive price. Yet they are identical in design to what many brands sell as their high-end extensions. The individual adjustment systems allow a reliable and secure length adjustment. Thanks to RAPID.RELEASE the sail-tension can be instantly released when de-rigging. With the sophisticated cleat positioning you just place one foot on the extension and pull the rope with a short jerk out of the cleat -done.