Really Right Stuff B2 AS II 1/4-20: Lever Release Clamp

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This clamp has a NON-threaded center socket with countersink; mounting screw drops through from above into tapped female socket. This clamp cannot spin onto a threaded post. The B2-AS II clamp mounts on RRRS ballheads, as well as some other tripod heads. Please check your model to verify you can swap clamps or consult our knowledgeable Customer Support Representatives for compatibility.



  • Easy Top-Loading
  • Visual Confirmation of Lock Position
  • Low Profile
  • Less Abrasive, No Twisting
  • Super Tough, Reliable
  • 50 lbs. of holding power under full compression
  • Bullseye Spirit Level
  • Laser Engraved for precise and repeatable positioning


In the Box

  • B2 AS II Lever-release style quick-release clamp
  • (1) Flat head screw, stainless steel, ¼"-20 x 3/4"
  • (1) 5/32" hex-key
  • user's guide



  • Jaw Length: 2.4" / 60mm
  • Width: 3.4" / 87mm
  • Height: 0.6" / 16mm
  • Weight: 5.6 oz / 159g
  • Center Hole not threaded; comes with one 1/4"-20x3/4" flathead screw and hex key