TeacherGeek 14 ml Project Barrel - Pack of 40The 14 mL Project Barrel from TeacherGeek is a compact and adaptable component designed to support a wide range of classroom STEM builds. Made from durable plastic and featuring mounting holes, a flange, and pins, these barrels allow for seamless integration into both fluid based and mechanical systems. Whether students are building water filtration prototypes, designing small scale hydroponic units, or exploring engineering principles, these project