Model # 17145: This one-hand handle with piston and seal is made to convert a single Ameda HygieniKit into a manual breastpump. The patented, easy-to-use design provides control and flexibility by varying the frequency and degree of handle squeeze. The one-hand design allows you to manually pump one breast while your baby nurses on the other. By using two breast pumps, you may dual-pump to save time. Both of these methods stimulate the let-down reflex and enhance milk flow. This product can be used with a standard or custom breastpump flange body.