IDS (Integrated Drive System) provide precise slop free installations. Specially moulded plastic servo output levers allow the pushrod to mount much closer in than on a conventional servo horn resulting in more torque and less slop. At the control surface end, there is a choice of an internally mounted plastic control horn for a completely internal slop free linkage system (if your model comes IDS friendly) or a traditional 3mm brass horn if it doesn’t.