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The back of your irons swing practice that can be charged. Physical weight adjustable run, you can just behaved, but in fact, while feeling to the ball while the correction of the swing rhythm.
There are Also Heavy Club to make core strength training and strength you need, golf, distance, and shake up.
Advantage in the morning warm up or as a wedding ring. Silicone materials are used so there is no harm to the club.
Both Left and Right:
Material: Soft Silicone
Size variations: Length 50 cm, diameter 2.5 cm
Country of Manufacture: CHINA