Mini Trimmer Head Multi-Application With 3 Knobs

Fits Models:
Knob #1 (5/16-inch RH) Black
Homelite ST155 / ST165 / ST175 / ST185BC / ST275 /ST285 / SX135 / GST-18 / HLT-15 / HGT & GST

Knob #2 (5/16-inch LH) Red
Homelite HBC30 / ST375 / ST385 / ST385C / ST385BC / ST485/ ST385BC

Knob #3 (1/4-inch RH) Blue
McCulloch / 16 / 17 /18 / 25 / 27 / 28 / 28C / 29 / 32BC / 60 / 65 / 80 /  ET270 / T0005 / MT270X /280 / 282 / 285 / 285BC / 287BC / 300X / 302X / MT320 / Road Runner II / III