COLOR: BLACK. The supplied print is black; render colors are illustrative. Turn a compatible guitar tuning button using a small hand crank. DIMENSIONS Socket recess 18 × 11 × 14 mm; M4 clearance pivot; about 59 mm crank offset. CONTENTS 2 printed pieces: 1 × peg socket; 1 × winder crank. Material: PETG. SUPPLY SEPARATELY M4×25 pan-head screw, two M4 washers, M4 locking nut; compatible guitar button. USE AND ASSEMBLY Join socket and crank with M4×25 screw, two washers and locking nut. Keep pivot free with about 0.3 mm axial play. Check knob fit before applying very light hand torque; do not force stiff tuners. Images are renders of the actual CAD. Geometry and reference slicing checked digitally; physical fit, finish and service life have not been established by those checks. Printed to order. Shipping and taxes are calculated at checkout. Design: João Lutz / JoaoLutzFilm, with AI assistance.