This is the JConcepts Fin Turnbuckle Wrench.

FEATURES: Fits JConcepts and Lunsford .143" turnbuckles Steel construction stamped with JC logo Small size fits easily into pit box

INCLUDES: JConcepts Fin Turnbuckle Wrench

SPECS: Length: 2.4" (60.8mm) Wrench Size: .0143" (3.63mm)  

BOX DIMENSIONS: 2.75" W. X .50" H. X 4.75" L. BOX WEIGHT: .05 LBS.