The lagging is 100% vulcanized for pulley bonding and strength, making it resistant to cuts and gouges. Two pulley styles are available from stock for next day delivery; D-LAG heavy-duty drum pulleys from 10- to 24-inch diameter, and D-LAG MDX (mine duty extra) drum pulleys from 12- up to 24- diameter. Baldor’s Dodge heavy-duty pulleys are designed with flexible end discs to eliminate weld fatigue under cyclical loads, while Dodge MDX pulleys feature an integral hub design that eliminates the welded hub.