LB1410 Nasal 0xygen Cannula Made of clear, medical grade PVC . Dipped prong, straight prong, curved prong is available Color: green transparent, white transparent and light blue transparent is available. Length: with 2m tubing, different length can be customized, anti-crush tube can ensure oxygen flow even if the tube is kinked. Packing: packed in individual PE pack.50 pcs/carton or 100 pcs/carton.