My original ER 3 is 385 grams but I was told by an Evnroll rep that they felt that was too heavy and were no longer making heads that weight. When I purchased an ER 7CS I could only get it with a 370 g head. (Bought the mallett once it was available as they only originally had blades). Took me awhile to get used to the lighter head and even put lead weights on it for a month or so but now use at 370g.