Dichtomatik Rod Wipers come in a wide variety of Metal Clad and Snap-In styles. Metal Clad Wipers are designed to press-fit into open face rod wiper glands, with no need for snap-rings, face plates, or other retention devices to hold the wiper in the gland. Snap-In Wipers are designed to fit in standard wiper glands. Some Snap-In Wiper styles feature a slotted heel to prevent wiper blow-out.