The Knurled Copper Contact Screw is a clean, functional upgrade for artists who want dependable conductivity and better grip while tuning their coil machines. Made from copper for strong current transfer, the knurled texture makes fine adjustments easier at the bench without slipping or fighting the setup. Simple details make a difference when tuning a machine, and this contact screw is built with that in mind. Whether you're dialing in a daily runner, replacing worn hardware, or finishing a custom build, this piece delivers reliable performance with a classic machine shop look. Built for professional tattoo artists who appreciate practical hardware that works as good as it looks. Features Copper construction for excellent conductivity Knurled grip design for easier adjustment Smooth tuning and dependable contact Fits coil tattoo machine setups Great for custom builds, repairs, and restorations Professional tattoo use only Long 8/32 Threads Thread length 1.019" Total length 1.209" Qty: 1 pcs Made in the USA by Lucky Supply Mfg Short 8/32 Threads Thread length 0.871" Total length 1.09" Qty: 1 pcs Made in the USA by Lucky Supply Mfg