CHEMTRONICS Part 80-4-5 is a pack of 5 rosin activated static dissipative bobbins. These bobbins are designed to safely dissipate static electricity and prevent damage to sensitive electronic components during soldering and desoldering processes. Each bobbin is infused with rosin for enhanced static dissipation and improved soldering performance. Upgrade your soldering station with these high-quality bobbins for reliable and efficient static control.