1, Single Imperial and Metric Size Collet Set BT40 ER32 Collet Chuck Set For BT ER Tool Holders is packed by film. 2, Imperial and Metric Size Collet Set BT40 ER32 Collet Chuck Set For BT ER Tool Holders is packed by aluminum plastic box according to specific model. 3, Bulk quantity Imperial and Metric Size Collet Set BT40 ER32 Collet Chuck Set For BT ER Tool Holders are packed by pallet, which is for shipment by sea or by air.