Broaching tools are used to pre-broach holes for very hard materials with a hardness greater than 30 HRC or 300 Vickers. The broaching tool BT332-2 is used to pre-broach the following clinserts: CL428 CLL428 CL420 CLL420 Anemo can’t guarantee the amount of holes that can be pre broached, Since this is mostly due to hardness of the parent material and proper use of the tool.