This is the optional Propeller Guard for the Estes Proto-X SLT.
Also fits the original (non-SLT) version Proto X and Synchro Quads.
FEATURES: Molded plastic construction, white in color
Extends past propeller arc to reduce or prevent damage
INCLUDES: Propeller Guard with Illustrated Instruction Sheet
SPECS: Width: 3.5" (90mm) measured diagonally