Function: 1 Special lateral indicator accessory for pumping machine Easy to install and operate. 2. Strong and transparent, widely used in pumping cow, sheep, horse, donkey and lava. 3 Selected high-quality PSU material, safe, non-toxic, durable, corrosion resistant, heat resistant. 4 Breast pump parts, exquisite workmanship, direct replacement of old or damaged parts, improve efficiency. 5 Attaches directly to the pump, convenient for pumping, fast, safe and reliable. How to use: Just attach to the pump. Specifications: Item Type: Cross-width Indicator Material: PSU. Weight: Approx. 7.4 oz (210 g) / Product Size: Approx. 14.3x9.5cm / 5.6x3.7in Purpose: Pump Accessories a> Package List: 1 x Crosswidth Indicator Note: 1 Please allow 0-1 inch differs due to manual measurement. Thanks for your understanding. 2. Monitor is not calibrated same. Item color displayed in photos may slightly differ from the actual object. Keep it standard and authentic.