Check the listing for details. Revolution Design 1/10 3mm Ultra X-Ring Shock O-Rings (8) [RDRP2003]. Condition: New. Listed at 8.49 USD. The Revolution Design 1/10 3mm Ultra X-Ring Shock O-Rings are a great option for your 1/10 vehicle. These Ultra X-Rings carry over the proven rubber compound of the well-known white O-rings. Thanks to their X-shaped profile, friction is reduced while retaining great sealing characteristics to any debris outside the shock, no matter whether you run on dirt or carpet. Made to 3mm shock shaft specifications allows these X-Rings to fit a wide variety of vehicles. Package includes eight X-rings. Features: Proven soft rubber compound X-ring profile for low friction Convenient packs of eight Compatible with a wide range of kits with 3 mm shock shafts, including Team Associated, Yokomo, Kyosho and the latest TLR kits About Us | View Store