You can use this cleaning brush safely as it features a long, ergonomic handle that helps protect your hands from hot water and provides a comfortable grip. The brush is designed with soft bristles and fine craftsmanship to effectively clean without damaging your coffee machine. Made from high-quality plastic, wood, and bristle materials, it is odor-free and built to last. This cleaning brush is ideal for cleaning espresso machines, coffee grinder burr blades, and removing coffee residue. Item Name: Grinder Cleaning Brush Material: Plastic, Wood, Bristle Features: Heat-resistant, Anti-wear, Food-grade Size Details: Length: 15cm / 5.91" (Approx.) Length: 17cm / 6.69" (Approx.) Length: 18cm / 7.09" (Approx.) Length: 20cm / 7.87" (Approx.) Length: 22cm / 8.66" (Approx.) Note: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement. Package Includes: Style A: 1 Set of Grinder Cleaning Brush (Total 5 Pcs) Style B/D/E/F: 1 Set of Grinder Cleaning Brush (Total 4 Pcs) Style C: 1 Set of Grinder Cleaning Brush (Total 3 Pcs)