The Picklebig5 is a 5 inch ultralight frame intended to build a 5 inch "toothpick". 
Those light 5 inch frames are not new but now you can build one with nano and whoop sized gear ! 
The aim is to stay below 250g AUW.

Frame Specs :

Frame weights 29/30g in 5mm thick carbon fibre
190mm wheelbase
FC Mount : Whoop AIO 26x26mm (BetaFPV 20A !), 20x20mm
12mm to 16mm motor mount (4 hole)
Recommended motors : from 1506 to somewhere around 2204
Separate canopy mount to isolate it from the stack screws

Get more infos & printable stuff on the Thingiverse page : https://www.thingiverse.com/thing:3919273

??  My PickleBig5 setup :
- Frame : PickleBig 5 inch https://www.thingiverse.com/thing:3919273
- Canopy : PickleBigPod https://www.thingiverse.com/thing:3919273
- FC : BetaFPV Toothpick 2-4S 20A AIO https://betafpv.com/products/toothpick-f4-20a-aio-brushless-flight-controller
- Motors : XNova 1804 3100 Kv https://www.xnovamotors.com/xnova-1804-lightning-racing-motor-series/
- Props : T-Motor T5143
- Battery : Infinity 850 mAh 4S https://www.banggood.com/Infinity-14_8V-850mah-70C-4S1P-Graphene-LiPo-Battery-XT60-Support-15C-Boosting-Charge-p-1090125.html?p=SI190238022477201908
- VTX : Eachine Nano VTX https://www.banggood.com/Eachine-NANO-VTX-5_8GHz-48CH-25100200400mW-Switchable-FPV-Transmitter-Support-OSDPitmodeIRC-Tramp-for-RC-Drone-Tiny-whoop-p-1525228.html?p=SI190238022477201908
- Cam : Runcam Nano 2 https://www.banggood.com/RunCam-Nano-2-13-700TVL-1_8mm2_1mm-FOV-155170-Degree-CMOS-FPV-Camera-for-FPV-RC-Drone-p-1469656.html?p=SI190238022477201908
- RX : TBS Crossfire Nano https://www.team-blacksheep.com/products/prod:crossfire_nano_rx