2 set Musical instrument accessories:1 x Electronic Piano Dust Cover & 2 x Guitar Tuning Pegs Tuning Mechanics 1.Transparent grind arenaceous waterproof protect bag for electronic organ. 2.Environmentally friendly and odor-free. 3. Widened design is suitable for a variety fo the piano. 4.This is a great idea to keep your piano cleaning.5.It is suitable for most electronic piano, please refer to specific dimensions. Product Name: Guitar Tuning Peg String hole diameter: 1.98 mm / 0.08 inch Fit bore diameter: 9.3mm / 0.36 inch Diameter mounting hole: 2.5 mm / 0.098 inch Size: 11 x 3.8 x 4 cm / 4.33 inchx 1.49inch x 1.57 inch(L x W x H); Material: metal, plastic+PEVA Color: beige, silver gray+Matte Clear Size: 88key:140x16cm Package Contents: 1 x Electronic Piano Dust Cover 2 x Guitar Tuning Pegs Tuning Mechanics Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.