Helicopter pilots count on DART Aerospace crosstubes for safety, durability, and compatibility. Our crosstubes have been designed to be compatible with both DART Round-I-Beam™ and OEM Skidtubes and are easily installed using a thru-bolt system rather than with short bolts into anchor nuts. The crosstubes are manufactured by means of an environmentally friendly turning process and utilize clamp-on stainless steel supports to avoid rivet holes in high stress regions of the crosstube. DART high Aft crosstubes are life-limited to 10 000 cycles. *Measures 26" from ground to bottom of crosstube under-support. Life limit 10,000 landings.