Shop › Arri 50' Head Cable for 12/18K HMI Image 1 of 2 Image 2 of 2 Arri 50' Head Cable for 12/18K HMI $1,525.00 Part No: L2.0005189 This ARRI 50' Head to Ballast Cable for ARRI 18/12Kw HMI Fresnel and ARRIMAX 18/12kW connects the ARRI 18/12Kw HMI Frensel and ARRIMAX 18/12kW PAR to its ballast.