EXTRA LARGE SIZE - The blood pressure cuff fits adult arms with a circumference of 22-52 cm. The replacement cuff is easily self-adjusting to improve accuracy. EASY TO USE - Easy to use, slide it onto your upper arm and connect it to your home blood pressure monitor and go. REPLACEABLE CONNECTOR - The cuff comes with a replaceable connector and the hose diameter is 5 mm. If the connector is not the same as your previous one, simply remove the previous connector and install it in the new replacement. COMPATIBLE - Compatible with most models of electric blood pressure monitors for arms, arrangement of 0-300 mHg. Check your blood pressure monitors to see if it is suitable. PERFECT CHOICE - You don't need to buy a new set, just order this cuff for your old meters, it works great and saves you money. If you have any problems with the product, just contact us. nSpecial reminder: Our store has a 24-hour customer service team that responds quickly and takes customer experience as the first standard. You can buy with confidence and welcome your arrival.