All Really Right Stuff clamps are precision-machined in the USA from solid aircraft-grade aluminum and finished in a beautiful matte-black anodize. Excess mass is removed to minimize weight and all corners are radiused for comfort and beauty. Most clamps are contoured to incorporate a high contrast spirit level for quick initial leveling in the field, and safety stop relief grooves allow for generous adjustability. All Really Right Stuff clamps are guaranteed (materials & workmanship) for 5 years.
Two Clamping Styles:
Clamp jaws open and close in one of two ways: by twisting a knurled knob on our tried & true screw-knob clamps; or by flipping a single lever on our innovative, patented lever-release clamps.
At left: example of screw-knob style clamp, B2-Pro.
At right: example of lever-release clamp, B2 LR II.
See our Warning about lever-release compatibility.
Two Mounting Styles:
All clamps mount onto heads in one of two ways: They either spin onto an exposed male threaded stud (threaded either ¼"-20 or 3/8"-16), or they drop onto a female tapped socket (tapped either ¼"-20 or metric 6) and are secured with a screw from above. Choose models with a threaded center hole if spinning clamp onto a threaded stud. Choose models with a non-threaded (“thru-hole”) center if mounting clamp on any ballhead from Really Right Stuff, any current model Arca-Swiss, and some Manfrotto models. See Clamp Selector Table
for help in choosing the proper clamp.
At left, example of threaded center socket. This clamp can spin onto a threaded stud.
At right: example of non-threaded center socket. This clamp is installed by dropping a screw through the clamp into a female tapped socket.
Our mini (1.5”), 50mm and 60mm length clamps are suitable for most photography. Our longer clamps, with 80mm (3.2-inch) long clamping jaws, are suitable for large format or super-telephotos—heavy artillery.
At left, example of standard length clamp, our 60mm B2 LR II.
At right: example of longer length clamp, our 80mm B2 LLR II.
The graceful Stainless Steel S-shaped cam-locking
lever provides desirable benefits over traditional screw knob
Easy Top-Loading: In one quick action, the clamp can
go from closed to fully open, allowing easy top-loading
of Arca-Swiss-compatible quick-release camera and lens
plates. No more lost shots while fumbling to feed the
plates into the end of the clamp.
Visual Confirmation of Lock Position: You can readily
observe if the lever is locked, half-open or fully open.
Low Profile: The lever does not protrude above or
below the top or bottom of the clamp, and, in the
closed position, the lever closely hugs the contours of
the clamp. This makes it less of a "weed catcher" in the
field and reduces the chance of being damaged in a fall.
Less Abrasive, No Twisting: The smooth contours of
the lever are less abrasive than standard knurled knobs,
and for those with arthritic hands, the graceful lever
cams open and closed with just finger force.
Super Tough, Reliable: The Stainless Steel lever delivers
a lifetime of wear and rides on a self-lubricating,
wear-resistant bronze bearing surface. Delivers 50 lbs. of
holding power under full compression (the fully closed
position) with our plates. This is more than sufficient
for any practical photographic application.
Use only with Really Right Stuff or Wimberley plates: See note about lever-release clamps
Traditional screw-knob quick-release clamps can sustain as much weight and stress as any tripod head can bear—and then some! Also perfect for monopod use.
Captive Knob: Knob stops at maximum opening—cannot be lost in the field.
Refined Knurling: Beautifully contoured with raised edges and a domed end to improve aesthetics and feel.
Light Weight: Screw-knob clamps are about 15% lighter than their lever-release counterparts.
WARNING ABOUT OUR LEVER-RELEASE CLAMPS
Due to wide variations in other brands of Arca-Swiss compatible plates, we recommend using our lever-release clamps only with Really Right Stuff or Wimberley brand quick-release plates. If you own other brand plates, see this note
about our plate exchange policy.
Our lever-release clamps are not user adjustable, so the plate that you use in our lever-release clamp has to be EXACTLY the right width. Only Really Right Stuff and Wimberley build plates to the same exacting tolerances. But screw-knob style clamps are much more forgiving of slight differences in plate width since you control the clamp jaws by turning the screw. So most Arca-Swiss style quick-release plates will work in most screw-knob versions of Arca-Swiss style clamps. Warning: many Novoflex plates do not work even in our screw-knob style plates.
To summarize: all Really Right Stuff plates and rails will work in all screw-knob versions of Arca-Swiss style clamps.This includes screw-knob versions of Arca-Swiss style clamps from Markins, AcraTech, Arca-Swiss, and Kirk. BUT only Really Right Stuff and Wimberley plates and rails are guaranteed to work with Really Right Stuff lever-release clamps.