Product Description:

• Short Black Knob
• Two clamps can mounted together back to back using aligning pins and bushing.
• Clamps can be mounted in different orientation. Pins will prevent clamp from twisting
• F61-1b center hole is tapped 1/4-20
• F61b center socket is countersunk 1/4-20 but also threaded 3/8-16
• Set can not be assembled with knobs facing the same direction.
• When clamps are disassembled they work as standard arca type clamp
• Deep relief grooves guarantee compatibility with most plates and rails.
• Relief groove prevents free fall when the clamp is not fully closed and your plate has safety stops.
• Knob is captive. Knob stops at maximum opening - cannot be lost in the field.
• Back side has grove to match some ball heads connection and prevents it from twisting.

• 1.50 inches long each
• Weight of each clamp: 3.0 oz (84g)
• F61-1b center hole is tapped 1/4-20
• F61b center socket is countersunk 1/4-20 but also threaded 3/8-16
• Tongue-in-pocket Design - Clamps have a tongue-in-pocket design that protects internal parts from dust and grit. It does prevent the tendency of the moving jaw to hinge backward during clamping, It keeps the jaws aligned with the geometry of the plate and eliminating unwanted bending forces on the threaded stud.
• Precision C.N.C. machined from 6061-T6 Aluminium
• Compatible with Kirk, R.R.S.and many other Arca style Quick release plates
• Stainless steel hardware.
• Black hard coat anodized clamp and clear anodized knob.
• Made in USA

One F61b clamp
One F61-1b clamp
One 1/4-30 - 3/4 mounting screw
Two dowel pins
Hex wrench for mounting screw