Propellor blade, believed to be from a Lockheed Martin C130J Super Hercules propeller.
Non airworthy, for display only. 
 
Dimension-  length 110 cm 
 
The Lockheed Martin C-130J Super Hercules is a four-engine turboprop military transport aircraft. The C-130J is a comprehensive update of the Lockheed C-130 Hercules, with new engines, flight deck, and other systems. As of February 2018, 400 C-130J aircraft have been delivered to 17 nations.
The C-130J is the newest version of the C-130 Hercules and the only model still in production.