Quick Release Adapter w/ Sliding Plate Compatible w/ 501PL 357PL Stabilizers & Sliders Just replace the flash adapter

Just replace the flash adapter ring

1x Drop in mount for round circular polarizer (included with this holder

Note: Not include the AD200 Flash

A portable light modifier

Quick Release Adapter w/ Sliding Plate Compatible w/ 501PL 357PL Stabilizers & Sliders Just replace the flash adapterThis Quick Release adapter gives you the freedom to remove the camera from the head without detaching it from the plate and put it on any other support. Compatible with the 501PL (old 3433PL) camera plate (supplied with the 3433, 3460, and 3465 heads) and the special 501PLONG accessory plate. 0. 8" (20mm) of sliding travel within plate to optimally balance gear Female 3 8" 16, 1 4" 20, and 3 8mm threadings on bottom Plate has 1 4" 20 and 3 8" 16