The 501PL Quick Release Plate is a 3.38" long sliding quick release plate compatible with heads that use the RC5 quick release system. It comes supplied with one 1/4"-20 and one 3/8" camera screw each, and features a location (video) pin.
For 501, 503 & NG Heads
RC5 Quick Release System
Attachment (Top): 3/8'' screw
Attaches By: 1/4'' screw
Color: black
Depth: 1.5 in (3.8 cm)
Height: 0.43 in (1.1 cm)
Length: 3.39 in (8.6 cm)
Material: aluminum
Weight: 0.2 lbs (0.09 kg)