Check the listing for details. MAXX - CNC Aluminum Stainless Steel Spring Guide - MX-SPG001S3. Condition: New. Listed at 19.99 USD. CNC Stainless Steel/Aluminum Spring Guides are designed to keep the spring in line and allow the spring to rotate on shaft during high compression, suitable for AEG version 2 gear box upgrades. This Spring Guide is machined with an M5 thread on stainless steel hub to hold the stock securely and equipped thrust ball bearing to reduce spring stress and breakage during high speed spring compression. Made of Stainless Steel and Aluminum. Features: Stainless Steel and Aluminum constructionMachined M5 thread on stainless steel hubEquipped thrust ball bearing to reduce spring stress and breakageAligned spring in line and rotate on shaft during high compressionStrong stainless steel hub chamfer shoulder designs Specifications: Hub Thru-Hole Diameter: M5x0.80Hub Outer Diameter: 16mmShaft Outer Diameter: 10.8mmShaft Length: 44.5mmOverall Length: 51.5mmMaterial: Stainless Steel and AluminumUsed for V2 gearbox AEGs