Serpent have introduced new front solid axle set and spool set for the range of Eryx 411. This new spool is standard on the Project 4X car and can also be used on the Eryx 411 series. The lightweight aluminium spool adapts the main gear and uses lightweight and durable Serpent spring steel adaptors with the blade system. This combination will make sure the whole assembly works well also over longer time. All hardware included. The 401725 adaptors also fit the older type Eryx 411 spool 401380 for drivers wanting to update.