The dart flight set is suitable for indoor and outdoor use. It is great to have so many options to pick from and when your flights break or you just want to change the look of your darts this is a great option. Specification Material: Plastic Shaft Overall Length: 3.35cm Flight Overall Length: 4.2cm Flight Overall Width: 3.3cm 2BA Standard Thread Size: 4.5mm Shaft Overall Length: 2.9cm Flight Overall Length: 4cm Flight Overall Width: 3.5cm 4BA Standard Thread Size: 6mm Packing List: 3pcs/6pcs/9pcs x Integrated Dart Shaft and Flights Advantage These integrated dart shafts and flights are made from plastic material and are durable, light, sturdy, and colorful. Good designs, sturdy material, and fit snugly. Helps your darts fly with superior accuracy. Instruction Easy to use. We provide the selection and options to mix it up for multiple groups playing different styles of games. These make it easy for everyone to have their own personal option. NOTE: Make sure to use flight protectors because they can prevent damage to the flights!