This DiversiTech® DST-6 Hard Start Kits, Torque Plus, 500% Torque Multiplier DST 6 offers a larger capacitor for severely hard to start compressors. The DST 6 can be used on all PSC single phase compressors from 1 1/2 to 10 Horse Power A unique combination of relay and safety timer. Diversitech Torque Plus Hard Start Kit, Accessory Type: Hard Start Kit, 120 to 288 V AC, 1-1/2 to 10 hp, Import