The ACCU-CHEK Ultraflex Infusion Set inserts at a 90 degree angle quickly and effortlessly due to its soft, tapered cannula. If needed, you can temporarily disconnect from the pump providing you with convenience wherever you go. The connector is reversible, allowing you to connect the tubing to the cannula without even looking. Thanks to an audible clicking noise you will know your connection is secure. Each box comes with 10 sets.