Accu-Chek Disetronic Tender 1 Infusion Sets - 13mm Cannula and 24" (60cm) Tubing - 10/bxVersatile Control! The Tender 1 infusion set is the right fit for the active, experienced pumper who wants maximum insertion control and wearing comfort. The adjustable insertion angle allows the user to choose the ideal angle and depth for maximum comfort and flexibility. Accu Chek Disetronic Tender 1 Infusion Set Features: Accu Chek Disetronic Tender 1 Infusion Set 10 Full Sets 4541421001 17mm Cannula and 43" (110cm) Tubing 4541391001 13mm Cannula