- Aluminum alloy material<br />- Compatible with 3.0mm motor shaft<br />- Package comes with 5 adapters<br />&nbsp;                                                                                                                                Dimensions: 1.10 in x 0.55 in x 0.47 in (2.8 cm x 1.4 cm x 1.2 cm)<br />Weight: 0.71 oz (20 g)<br /><br />