407 Tailrotor Rigging Block
P/N: 407TRB
Color varies when manufactured

Used with the 407 tail rotor flap work aid to check or rig the tail rotor system.
This is made from Garolite which is similar to phenolic.
Very tough but not as heavy as the steel blocks that Bell uses.
It is also light and won’t damage the tail rotor blades should you accidentally bump or drop it against the blades. 

407 Tail Rotor Rigging Block