DRDO has developed single-crystal blades technology and has supplied 60 number of these blades to HAL as part of their indigenous helicopter development program for helicopter engine application. This is part of a program taken up by Defence Metallurgical Research Laboratory (DMRL), a premium laboratory of DRDO to develop 5 sets (300 Numbers) of the single-crystal high-pressure turbine (HPT) blades using a nickel-based superalloy. The supply of the remaining 4 sets will be completed in due course.