1, Straight Shank ER Collet Chuck Extension Bar C25 ER16 ER20 ER32 Straight Shank Collet Chuck is packed by plastic film and carbon box, also will be stored before shipment. 2, Straight Shank ER Collet Chuck Extension Bar C25 ER16 ER20 ER32 Straight Shank Collet Chuck batches are packed by carbon box. 3, Carbon boxes Straight Shank ER Collet Chuck Extension Bar C25 ER16 ER20 ER32 Straight Shank Collet Chuck are packed by pallet, which is for shipment by sea or by air.