Features:

Q&A:
Q1: Are these fittings compatible with other M style or Type D air tools?
A1: Yes, they are fully compatible with all standard M style (Industrial/Type D) 1/4" NPT air couplers and plugs. They can be applied with most air compressors, hoses, and pneumatic tools on the market.

Q2: What materials are the couplers and plugs made from? Will they rust?
A2: The couplers are made from solid brass for corrosion resistance and long service life. The plugs are zinc plated steel to resist rust and wear. With proper use, they perform well even in humid or shop environments.

Q3: Does this kit include both male and female thread types?
A3: Yes, it includes both male and female NPT threads: 4 male and 4 female couplers, 12 male and 8 female plugs. This allows for flexible use with different tools and hoses.

Specifications:
Material: brass, zinc plated steel
Color: yellow, silver
Thread Size: 1/4" FNPT

Package includes:
4 x Female Coupler
4 x Male Coupler
12 x Male Plug
8 x Female Plug
2 x PTFE Tape

Notes:
Manual measurement, please allow slight errors on size.
The color may exist a slight difference due to different screen displays