The manfrotto 125 is an adapter spigot which features a 3 8 inch thread on each end.
Price: £11.95
This adapter spigot features a 3 8 inch thread on one end and a 1 4 inch thread on the other.
Price: £11.95
The manfrotto 014 14 16mm female adapter is a locking adapter which fits on to any light stand with a 5 8 top stud and allows vertical or horizontal mounting of a light fixture, flash, or camera which has a 1 4 thread.
Price: £18.95