XCSOURCE® 5x 1/4 "3/8" tripod mount screw Convertible Flash Adapter Light Stand Spigot LF600 (Tools & Accessories)
Really handy these spigots !!! All combinations are possible except in male 3/8, that's a shame and it is this which is 1 star. What I also regret ... is that the spigots are aluminum, so very fragile because the marks are left if too tight the screw