Complete set of rigid couplings in sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm

Made from durable 45# steel for long-lasting performance

Provides secure, backlash-free connection between motor and shaft

Ideal for stepper motors, DC motors, and other DIY projects

Ensures precise torque transmission for smooth operation

Compact and lightweight design for space-saving installations

Easy to install and remove without specialized tools

Perfect for CNC machines, robotics, 3D printers, and automation projects

Resistant to wear, deformation, and mechanical stress

Versatile coupler set suitable for hobbyists and DIY engineers