These knockboxes are made with strong ABS plastic and include a removable NBR rubber knock bar

first coming out swinging and then leading you to a place of quiet contemplation

98 mm or 140 mm to suit a range of grinder models

This spin-and-spray feature cleans your gear rapidly and can get through the most stubborn of residues

Boiler Anti-Vac Valve Style:Victoria Arduino These knockboxes are made withThe Boiler Anti Vac Valve is an essential safety feature for various coffee machines, designed to prevent negative pressure build up in the boiler. Tailored for compatibility with 1 4" setups, this stainless steel valve enhances the safety and efficiency of your equipment, ensuring long term reliability and optimal performance. Boiler Anti Vac Valve Features Enhanced Safety Provides crucial protection against vacuum conditions that can cause