IHT-VR
IH-2 Series 5 Inch (in) Truck Base Diameter Threaded Revolving Single Pulley Truck for Cable Style Internal Halyard Poles

IHT-1
IH-2 Series 6-1/2 Inch (in) Truck Base Diameter Threaded Revolving Single Pulley Truck for Cable Style Internal Halyard Poles

IHT-2
IH-2 Series 7-1/2 Inch (in) Truck Base Diameter Threaded Revolving Single Pulley Truck for Cable Style Internal Halyard Poles

IHT-3
IH-2 Series 10-1/2 Inch (in) Truck Base Diameter Threaded Revolving Single Pulley Truck for Cable Style Internal Halyard Poles