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.
5/16" SAE OP1 Flare Punch For Brake Pipe Flaring Tool Single Flare FL53
3/8" SAE OP1 Flare Punch For Brake Pipe Flaring Tool Single Flare FL54
3/16" SAE OP1 OP2 Brake Pipe Flaring Bench Flare Tool Punch Single Double Bubble
3/16" SAE Single OP1 Flare Punch for Sykes Pickavant Brake Flaring 270 Series
4.75 mm DIN Single OP1 Flare Punch for Sykes Pickavant Brake Flaring 270 Series
Dual Head Flaring Tool 4.75 mm ISO/DIN Bubble Flare and 3/16" SAE Double Flare