Z326-15-A7 by Hermle is a 2-pack of rotor adapter inserts for the Z207-A combination rotor, converting the 15 mL rotor positions to accept 7 mL tubes. Compatible with the Hermle Z207-A-CMB compact centrifuge and Z306/Z326 series, these adapters enable secure, balanced centrifugation of 7 mL blood-collection, gradient, and culture tubes without format transfer.