These are the same chassis used in our 1.10" Saberforge compatible kits. They are flexibly designed to be compatible with nearly all soundboards on the market & are to be used with 18650 Li-Ion battery cells. 
 
These chassis are manufactured out of durable Nylon 12 material by SLS 3D printing technology.
 
Chassis are 3.72" in length.
18650 battery and battery tabs are not included.