# Rocket Espresso Giannino Electric grinder with flat burrs: 55 mm burrs · Stepless The Rocket Espresso Giannino is an electric coffee grinder with 55 mm flat burrs. Grind size adjusts steplessly. It holds 11.3 oz (320 g) of beans. Specs checked Sep 29, 2026 against 5 sources. - Brands: [Rocket Espresso](https://grinderwiki.com/brands/rocket-espresso/) - Official page: - Grinder Wiki: ## Specifications ### Basics - Type: Electric [1] - Brew methods: Espresso [2] ### Burrs - Burr shape: Flat [1] - Burr size: 55 mm [1] - Burr material: hardened steel [3] ### Grinding - Adjustment: Stepless [4] - Grind speed: 1.8–2.3 g/s [1][2] ### Capacity & size - Hopper: 11.3 oz (320 g) [1] - Width: 6.4 in (162 mm) [2] - Depth: 9.7 in (246 mm) [2] ### Electrical - Power: 390 W [1] ## Quick answers **What burrs does the Rocket Espresso Giannino use?** 55 mm flat burrs. **Is the Rocket Espresso Giannino stepless?** Yes. Grind size adjusts continuously, without fixed steps. **How many beans does the Rocket Espresso Giannino hold?** Up to 11.3 oz (320 g) in the hopper. **How fast does the Rocket Espresso Giannino grind?** 1.8–2.3 g/s. ## Sources 1. [d6f27b40c9da9af12ce5ba58d1e854cab26d31ed.pdf](https://cdn.sanity.io/files/zhlpxy7s/production/d6f27b40c9da9af12ce5ba58d1e854cab26d31ed.pdf) — cdn.sanity.io · Checked Sep 29, 2026 2. [Giannino \| Rocket Espresso](https://rocket-espresso.com/products/coffee-grinders/giannino) — rocket-espresso.com · Checked Sep 29, 2026 3. [Rocket Giannino Espresso Grinder \| Pro Coffee Gear](https://shop.procoffeegear.com/products/rocket-giannino) — shop.procoffeegear.com · Retailer · Checked Sep 29, 2026 4. [Giannino \| Rocket Espresso USA](https://www.rocket-espressousa.com/giannino) — rocket-espressousa.com · Retailer · Checked Sep 29, 2026 5. [Rocket-Giannino.pdf](https://cdn.shopify.com/s/files/1/0567/8563/3459/files/Rocket-Giannino.pdf?v=1725310118) — cdn.shopify.com · Checked Sep 29, 2026