Includes (1) 115003 Drill Bits New, Bulk Packed Genuine OEM Hitachi Replacement Part Consult owners manual for proper part number identification and proper installation Please refer to list for compatibility Compatible with the Following: Hitachi: WH18DBDL2P4, WH18DGL, WH10DFL2, WH18DBFL2S Customer favorite. Ideal for professionals. This item is essential. Customer favorite. Perfect