Manfrotto 195 Adaptor Male 5/8-1/4 screw fits into a 5/8” (16mm) receiver

Avenger E600 Pin Snap-In 16mm Male Alu Perfect for Super Clamp.

The Avenger E600 Snap In Pin has a hexagonal end that snaps into a Super Clamp or similar grip accessory. The other end will accept a lighting fixture that has a 5/8″ female receiver.

Manfrotto 037 Stud Short Hex Brass for Super Clamp 14/ & 3/8” m.

Avenger AV-E300 Adaptor Stud 5/8 with 1/4-20 F Female Thread.