Description: Kit Contents: 2 Flanges (19mm), 2 Duckbill Valves, 2 Backflow Protectors, 2 Tubes, 2 Bottles (with One-Piece Travel Cap). Work with Spectra S2, Spectra S1, Spectra 9 Plus Breastpump. Nipples and Dome Caps are NOT included in this kitAll pump parts made by Maymom. Not Original Spectra S2 Accessories. Not Original Spectra S1 Accessories. Not Original Spectra Pump PartsCompatible and interchangeable with Spectra pump parts. Same suction power as OEM parts. Replace Spectra Flanges, Spectra Duckbill Valves, Spectra Backflow Protectors, Spectra Tubings, Spectra Bottles (Wide Mouth). Multiple flange sizes available: 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mmThe One-piece cap of Maymom bottle includes sealing ring for secure seal. NO waste of milkdrop. Design for travel and storage of formula or breast milk. It's also perfect to convert baby feeding bottle to snack container or tumbler for mommyMaterial does NOT contain any BPA. Can be sanitized with water steam, boiling water or microwave-steam bags. Comply with FDA regulations for plastic materials that contact food Product Description A Complete Kit for Spectra Pump Maymom - Quality Pump Parts Depot Frequently Asked Questions Related Items Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.7 out of 5 stars 1,087 4.6 out of 5 stars 2,060 4.6 out of 5 stars 2,060 3.6 out of 5 stars 18 4.8 out of 5 stars 1,707 4.7 out of 5 stars 506 4.7 out of 5 stars 3,642 Contents 2 Sets 2 Pieces 2 Pieces 2 Pieces 2 Sets 2 Sets 2 Sets Features Pump Kit without Main Motor Available Sizes: 10 - 36 mm Detachable Design Connects Spectra SG / Maymom Available sizes: 13 - 32 mm Kit without Bottle, Main Motor Kit without Bottle, Main Motor Material Silicone, PP PP PP PP Silicone, PP Silicone, PP Silicone, PP Food-contact Grade Material