ER11 Collet Chuck Spindle Tool Holder 3.175mm For CNC

From the shop's description

ER11 Collet Chuck Spindle Tool Holder 3.175mm For CNC is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. 100% Brand New and High Quality. Type CNC milling Lathe Tool Color Silver Precision ground and hand inspected. Only the very best materials and grinding techniques used! It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.