SRAM Reverb Vise Blocks Precision Service for Your Dropper Post The Rock Shox Vise Blocks for Reverb are the clamping tool you need to properly service your Reverb AXS, Reverb, or Reverb Stealth seatpost. A flat section paired with three cut-outs securely holds the shaft steady during service, so you can work with confidence instead of guesswork. Features Three precision cut-outsmeasuring 7. 5mm, 10mm, and 25-35mm to securely hold different shaft diameters Purpose-built for Reverb servicecompatible with Reverb AXS, Reverb A1-B1, and Reverb Stealth A2-C1Genuine Rock Shox specialty toolengineered for accurate, repeatable service results SPECIFICATIONSCompatibility Reverb AXS, Reverb A1-B1, Reverb Stealth A2-C1Cut-Out Sizes7. 5mm, 10mm, 25-35mm | Sram | Reverb Vise Blocks Vise Block Reverb, Rear Shock B1