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Compare to: TaylorMade M3
The Heater B3 iron (TaylorMade M3 clone) is made of 17.4 stainless steel and has an extremely thin face to get maximum bounce upon impact.
CLUB
LOFT
LIE
WEIGHT
Material: 17.4 Stainless Steel
Hosel Diameter: .370
Finish: Polished
Ferrule: Required