1. 1/2-28 to 3/4-16  THREADED ADAPTER：

 Made of high grade stainless steel with shinny finish against rust or corrosion. Internal thread is 1/2-28 and outer thread is 13/16-16, which is quite durable and strong to meet your requirement.

2.PERFECT DESIGN: 

Our threaded fitting has smooth surface, compact threaded design and straight thread type with perfect hex configuration allows for safe tightening, never worrying about loosening. Combined with its strong stainless steel structure, the thread adapter has a more long-term service life for oil filter.

3.GREAT FUNCTION: 

1/2-28 to 3/4-16 filter thread adapter to connect an oil filter as a solvent trap when you want, and it is for connecting, a special cover part on 13/16-16 external thread using as a common muzzle device.

4. COMPATIBILITY:

 This automotive threaded adapter is quite available, fitting for most WIX FRAM BOSCH oil filters.