This is a precision manual boost controller that is made from high grade aluminium. 
 
As this boost controller is supplied with illustrated instructions that are specific for our valve it is suitable for novice or DIY mechanic installation.
 
Boost adjustments are made in a matter of seconds by simply turning the knurled adjustment knob.....It's as simple as that!
 
As with all boost increasing devices we recommend the use of a boost gauge to monitor any adjustments made.
  
Qty 1 x Lockable MBC Manual Boost Controller
Lightweight Aluminium Construction
Body Length: Approx 55mm, Overall Length: Approx 80mm 
Easy Adjustment 
Lockable Once Set
Ball and Spring Mechanism (Not a typical/inferior bleed type valve)
Illustrated Instructions (That are specific for our valve)