The punch in conjunction with a suitable die will produce a single OP1 SAE 45 degree Flare. You cannot use this item on its own, the tool is required.
3/8" SAE OP1 Flare Punch For Brake Pipe Flaring Tool Single Flare FL54
1/4" SAE OP1 Flare Punch For Brake Pipe Flaring Tool Single Flare FL42
5/16" SAE OP1 OP2 Brake Pipe Flaring Bench Flare Tool Punch Single Double Bubble
3/8" SAE OP1 OP2 Brake Pipe Flaring Bench Flare Tool Punch Single Double Bubble
10 mm SAE Single OP1 Flare Punch for Sykes Pickavant Brake Flaring 270 Series
8 mm SAE Single OP1 Flare Punch for Sykes Pickavant Brake Flaring 270 Series