Quick Release Adapter w/ Sliding Plate Compatible w/ 501PL 357PL Stabilizers & Sliders but is also removable and

but is also removable and can be replaced with a separately available steel claw

Just replace the flash adapter ring

i-TTL II /Manual

A portable light modifier

Mounting Thread Size: 1/4"  and 3/8 "

Quick Release Adapter w/ Sliding Plate Compatible w/ 501PL 357PL Stabilizers & Sliders but is also removable andThis 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