PANTOGRAPHIC HEAVY DUTY WIPER ARMS & BLADES These heavy duty stainless arms and blades match the heavy duty wiper motors - 2853 2854 & 2877. ,The arms and blades are interchangeable and offer robust construction giving long life and superior wiping ability. The Blades themselves are polymer - not rubber - for superior durability. STAINLESS CURVED BLADES Top quality S/S blades ideally matchednwith pantographic arms. Curved bladesnsuit both curved and flat windscreens.