This is a 6x4 Sport Gas Airplane Propeller. / It is a "tractor" (not a "pusher") prop. / / FEATURES: Computer-optimized design gives these props a thinner profile / and more "bite" with less noise. / Lightweight molded nylon construction reduces rotating mass for / higher output and longer life. / Reinforcing carbon fibers help maintain true, constant pitch at / any rpm. / / INCLUDES: One Carbon-Reinforced NYLON Propeller / / REQUIRES: ALL props require balancing, this is VERY important, use TOPQ5700. / May need prop reamer, use GPMQ5005 (SAE) or GPMQ5007 (Metric) / / SPECS: Length: 6" Pitch: 4 / Hole diameter: 1/4" / cmb 7/29/04 / ir/jxs