Replaceable mechanism-- the appearance allow you to see the movement clearly while playing. and you can insert it in the clay. Toy movements-- the plastic movement can be used as a good gift to make your friendship even better. Plaything part-- wind up toys movement clockwork walking toys DIY wind up plaything fitting for clockwork wind up accessories parts can provide your DIY craft with better working performance. Chrismas gifts-- when you place it in a clay work or on a and the toy move and bring you a lot of fun. Clay craft accessory-- the appearance allow you to see the movement clearly while playing. and you can insert it in the clay. Christmas wind up toys: with the compact clockwise movement, you can create your own moveable toy. it bring you a lot of fun, and practice your hands on ability. Clockwork toy movement: you can DIY a complete clockwise toy yourself, put the movement in it, and create your handicraft. plastic plaything movement professional clay craft fitting small movement for DIY Material: plastic+metal colour: black Package Contents: 30 x mini clockwork parts Only the above package content, other products are not included. Note: Light reflection 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.