High-quality materials: The swivel fitting is made of high-quality corrosion resistant zinc plated hardened steel ,anti-corrosion, service life; increased hardness and durability of accessories Swivel air plug design: The design of the swivel body can prevent the hose from kinking and increase the mobility, making it more flexible and convenient to use. -coated sealant threads can reduce air leakage, no need to wrap with tape Usage: Industrial accessories, are compatible with industrial Type M/D air Plug. This Female Air Coupler, is suitable for many pneumatic tools, such as air compressors, blow , air nails, etc. Can meet the needs of different users Swivel 1/4 inch NPT male quick Connect fittings size: All air hose Fittings are 1/4 inch NPT thread and 1/4 inch body Colour:silver Material:steel Package Contents: 5 * 1/4 inch Swivel Air Plug Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.