4-String Set - ApeX - Ukulele Mechaniken - Small German Pearl Buttons - 8,5 mm (18:1) 9-String Set ✔ Contents: 5 tremolo springs

✔ Contents: 5 tremolo springs with hard tension

✔ Contents: 6 Monkey Locks Locking Tuners

✔ Includes mounting hardware: screws

✔ Buttons: Slinky Metal

4-String Set - ApeX - Ukulele Mechaniken - Small German Pearl Buttons - 8,5 mm (18:1) 9-String Set ✔ Contents: 5 tremolo springs60 days Mon(k)ey Back*: 60 days money back Contents: 6 Monkey Locks Locking Tuners Buttons: Small German Metal Locking function: tuning stability + faster string changes Snapping Wheel: Aluminum locking wheel snaps into place and can never fall off Gear ratio: 18: 1 Lightweight: only 35 g per tuner (including mounting hardware) For extra thick strings: 1st 6th String: up to 0. 70 strings (1. 8mm) Closed design: maintenance free (no oiling necessary)