Q: Difference between BK301 & BKH301
A: BK301 and BKH301 both used for large flow, the diameter and item number for quick coupler-socket (female) are the same, using method also the same. (see demo1)
The difference between BK & BKH: the top of the male plug (connecting side for male and female) is different, unlike BK type (smooth surface), there’s bulge circle around surface (see red circle point) for BKH type. (see demo.2)
Outer diameter: BK301:13mm, BKH301:13.5mm
