This Punch in conjunction with a suitable die will produce a Single OP1 SAE 45 deg Flare in 1/4" Copper, Cupro Nickel and Steel Brake Pipes.
Sykes Pickavant 270 Series Die Set 6mm SAE Single Flare Spare Part 02704200
Brake Flaring Tool Punch 1/4" SAE + 6mm Pipe Single + Double Flares Former
1/4" / 6mm SAE Brake Pipe Flaring Flare Tool Punch And Die Single Or Double
Brake Pipe Flaring Tool 3/16" SAE and 1/4" SAE Single Double Bubble Brake Flares
Professional Brake Pipe Flaring Tool 3/16" & 1/4" SAE Single and Double Flares