Wittner Finetune 4 Peg Set:
Made from composite and light alloy material. Installed by pressing into place without glue. Peg shaft stays in place, and tuning is done by turning peg head. There is no peg/pegbox friction, and peg is not affected by climate and humidity changes. Professional installation suggested. Changing strings can be made much easier by using the Wittner Finetune Peg Winder.