Description The breast pump flange inserts are made of silicone material, sturdy and useful, compatible with electric breast pumps and wearable breast pumps. Simple and easy to replace, convenient to use. Safe, comfortable, durable, and practical for long-term use. Features - Color: As shown - Material: Silicone - Size: 4.60 x 4.60 x 3.40 cm / 1.81 x 1.81 x 1.34 in - Includes sizes: 13mm, 15mm, 17mm, 18mm, 19mm, 20mm, 21mm, 24mm - Made of high-quality silicone, safe and durable for extended use - Smooth surface with no rough edges or burrs, gentle on skin, comfortable during use - Fine texture, easy to install and replace, compatible with various breast pumps - Thoughtfully designed for reliable performance and ease of use - Suitable for use with electric and wearable breast pumps, providing convenience and comfort Packing List 1 x 24mm breast pump flange insert 1 x 21mm breast pump flange insert 1 x 20mm breast pump flange insert 1 x 19mm breast pump flange insert 1 x 18mm breast pump flange insert 1 x 17mm breast pump flange insert 1 x 15mm breast pump flange insert 1 x 13mm breast pump flange insert