Features: The 12V Peristaltic Pump delivers liquid control with adjustable 0.1 60rpm speed, Priming function, and bidirectional rotation, ideal for lab and aquarium dosing applications. Featuring metal housing, silicone tubing for chemicals resistance, and silents motor under 50dB, this pump ensures fluid transfer in demanding environment. Designed for laboratory technicians, aquarium enthusiasts, and researcher requiring accurate chemicals dosing or water circulation management in controlled setting. For aquarium medication distribution, lab reagent titration, or automated liquid handling systems where consistent flows rates and easy operations. Its portable designs integrates programmable LED interfaces for real time RPM monitoring, combining industrial performances with user friendly operations for scientific and aquatics applications. Specifications: Component: ABS Power: 12V Color: As Picture Show Size: Hole Distance 4.85cm/1.91inch Package Includes: 1pc Peristaltic Pump note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.