The replacement part number is N403111, 496244-00, N591846, 584558-00. It is compatible with the following models: D25114K-AR (Type 2) Rotary Hammer Power Tool, D25124K-AR (Type 1) SDS-Plus Hammer With Quick C Power Tool, D25304 Type 1 SDS Rotary Hammer, D25304 Type 2 SDS Rotary Hammer, D25304K (Type 1) 1 SDS Hammer, D25304K (Type 2) 1 SDS Hammer. It fits D25314 Type 1 SDS Hammer, D25314K (Type 1) 1 SDS Hammer, D25314K (Type 2) 1 SDS Hammer, D25324K (Type 2) Rotary Hammer Power Tool, D25324K Type 1 Rotary Hammer. It fits D25334K-AR (Type 1) 3kg SDS Plus Rotary Hammer Power Tool, D25334K-AR (Type 2) 3kg SDS Plus Rotary Hammer Power Tool, D25334K-B2 (Type 1) 3kg SDS Plus Rotary Hammer Power Tool, D25334K-B2 (Type 2) 3kg SDS Plus Rotary Hammer Power Tool, D25334K-B3 (Type 1) 3kg SDS Plus Rotary Hammer Power Tool, D25334K-B3 (Type 2) 3kg SDS Plus Rotary Hammer Power Tool, D25414KT-AR (Type 1) 4kg SDS-Plus Std Feat Com Power Tool, D25414KT-B2 (Type 1) 4kg SDS-Plus Std Feat Com Power Tool. Please note: There may be slight color differences due to lighting and screen display variations. This does not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Chuck Assembly Note: Light reflection and different displays may cause the item's color in the picture to vary slightly from the actual product. Measurement error allowance is +/- 1-3 cm.