B1hs1008 Set of 3 Heavy Duty XHT Hustler 54" Fastrak Mower Blades 797696 11856 601124

Will these fit a cub cadet gt3100? It doesn't have the star pattern

are these hi lift for standard lift

will these fit on a kubota K5351 54'' deck?

Will these fit my fastrak 54" that measuee 18.5" in length, couldnt find length measurement anywhere? Also are they high lift blades? Thanks!