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 will move and bring you a lot of fun. accessory-- the appearance allow you to see the movement clearly while playing. and you can insert it in the clay. Color: Black Material: Plastic, Metal Package Contents: 20 x Clockwork Legged Robot Toy 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.