Construction: cast aluminum • Cable Bushing: IHT-3 has a bronze fitting; all other sizes supplied with a stainless steel bushing at the cable exit point • Truck Spindle: 1-1/4" NPT threading • Ornaments*: accepts spindle threading of 1/2"-13NC. Secured by 1 stainless steel set screw (1/4"-20NC) • Movement: IHT-3 utilizes stainless steel sealed lubricant bearing assemblies; all other sizes utilize enclosed stainless steel bearings and raceway.