These are the ultimate phono cartridge clips as used on our TecnoArm. Machined from nonmagnetic solid brass billets, then electroplated with pure silver for superior conductivity. Pin entrance hole has a spring loaded easy-entrance chamfer, with a raised, contact area for better pin contact. Has an integral solder barrier to prevent solder wicking to the cartridge pin side, and a gas exit hole to allow for void-free soldering. Includes 4 color-coded shrink-on sleeves.