Sirui K-10-II , K-20-II , K-30-II , K-40-II is a very sturdy, precision-crafted ball head, made of high-quality materials and with a quick-release clamp that is compatible with the Arca-Swiss system. It enables the use of many different quick-release plates. Siru's smart safety lock also prevents the plate and camera from sliding off the clamp mount in case you accidentally fail to tighten the screw sufficiently.

The ball head is able to carry equipment weighing up to 25 kg. It has separate and easy to use metal control knobs with a grooved, matt black surface and integrated friction control in the ball-locking (tilt) knob. The head tilts 90° for portrait orientation and the base can be rotated 360° with very smooth movement, important when you want to take panoramic pictures. The ball head also has three built-in bubble levels that make it easy to adjust the camera in a perfect position.

K-10-II Quick-release plate Sirui TY-50X and carrying case in Neopren are included.
K-20-II Quick-release plate Sirui TY-50X and carrying case in Neopren are included.
K-30-II Quick-release plate Sirui TY-60X and carrying case in Neopren are included.
K-40-II Quick-release plate Sirui TY-70X and carrying case in Neopren are included.

Features

• 360° panorama function and vertical 90° Tilt
  Easy and fast control of all knobs
  Plate with 1/4″ stainless steel screw – head assembly with 3/8″ thread
  Safety Lock prevents slipping of the plate
  Sliding Stopper stops the camera slipping when in portrait mode
  Three spirit levels horizontally and vertically

• Ball diameter:
  ​​K-10 -33mm
  ​K-20 -38mm
  K-30 -44mm
  K-40 -54mm

• Total hight : 
  K-10 -98mm
  K-20 -101mm
  K-30 -109mm
  K-40 -124mm
  
  weighing up to

• K-10 -20kg
  ​K-20 -25kg
  K-30 -30kg
  K-40 -35kg