The Darwin Mods Squonk¹ 18650 Mechanical squonk mod. 

Dimension 80mmX48mmx29mm  

V2- FDV V4 Ultimate Edition Anti-spin 510 BF connector 22mm catch cup.

V2.5- ModMaker 510, 22mm catch cup. 

Modmaker Super Soft 8ml bottle.

Gold plated bannana connectors, copper switch tab brass contact.

Berrylium Copper spring bottom battery contact.

Powerful N52 magnets. 

3D printed switch cover available separately in many colours as a consumable spare part. Can be used with and without the switch cover.