DeWalt N409059 Angle Grinder 6-inch Guard 
This part can be found in the following models:
DCG414B Type 1 4-1/2- 6IN ANGL GRND  DCG414B Type 2 4-1/2- 6IN ANGL GRND  DCG414B Type 3 4-1/2- 6IN ANGL GRND  DCG414T1 Type 1 4-1/2-6IN ANG GRIND  DCG414T1 Type 2 4-1/2-6IN ANG GRIND  DCG414T1 Type 3 4-1/2-6IN ANG GRIND  DCG414T1-B2C Type 3 60V 4-1/2-6IN XR ANGLE GR  DCG414T2 Type 1 4-1/2- 6IN ANG GRNDR  DCG414T2 Type 2 4-1/2- 6IN ANG GRNDR  DCG414T2 Type 3 4-1/2- 6IN ANG GRNDR  DCG414T2-AR Type 2 60V 4-1/2" - 6" GRINDER  DCG414T2-B2 Type 2 60V 4-1/2" - 6" GRINDER  DCG414T2-B3 Type 1 60V 4-1/2" - 6" GRINDER  DCG414T2-B3 Type 2 60V 4-1/2" - 6" GRINDER  DCG414T2-BR Type 2 60V 4-1/2" - 6" GRINDER  DWE43244N Type 1 5-6IN BRSHLS PAD SW  DWE43265N Type 1 5-6IN BRHSLS SAG RAT