Bass drum: 22"x18"
Tom: 10"x7"
Tom: 12"x8"
Floor tom: 16"x14"
Hardware:
He also uses Pearl hardware, including:
Hi-hat stand
Cymbal stands
Tom mount
Bass drum pedal
Cymbals:
Jason Costa endorses Meinl cymbals and uses the following:
Crash cymbal: 16" Byzance Traditional Thin Crash
Crash cymbal: 18" Byzance Traditional Medium Crash
Ride cymbal: 20" Byzance Dark Ride
Hi-hats: 14" Byzance Dark Hi-Hats
China cymbal: 18" Byzance Traditional China
Splash cymbal: 10" Byzance Traditional Splash
Sticks:
Jason Costa uses Vater 5B hickory drumsticks.
This information was collected from various sources, including interviews with Jason Costa and product endorsements on music gear websites.