Acratech V2 Ballhead with Quick Release, Level and Detent Pin, Supports 25 lbs. Weighs less than 1 lb (.45kg) with quick release clamp. Easily holds over 25 lbs (11.4kg) at any angle. Full movements allow any camera position. Precision C.N.C. machined. Compatible with Kirk, Arca, R.R.S. and many other QR plates.