High quality, reinforced Vortex Spring Guide for use in version 2 and 3 gearboxes. It was made of lightweight yet durable 7075 aluminum, has stainless steel ball bearing. 

Rotating front part greatly facilitates the movement of the main spring. 

Features:

• Length: 48.5 mm 
• Diameter: 15.8 / 14.8 / 10.5 mm 
• Weight: 14g