This Beta75X frame is customed for 75mm 2S whoop drone.
Material: Clear plastic
Diagonal motor to motor distance: 75mm
Motor mounting hole: only for BETAFPV 1103 motors
FC mounting hole: fully compatible with whoop style FC board mounting pattern, 26mm x 26mm
Battery slot size: 11.5x16mm, for BETAFPV 300mAh battery
Upgraded Beta85X 4S 4K frame kit is customized for Beta85X 4K whoop drone. Added screw holes for installing F4 V2 4S FC and 4K canopy, can prevent ESC from loosening and also solve the adverse wear and tear reaction from ESC and FC caused by vibration. Thoughtful design of carbon brace, increased the stability of the frame. Also it has a customized battery slot to support 4S battery such as 450mAh 4S Battery.