To relieve the impact when a ball directly hits a pole and to eliminate the danger of the bounced back ball by disconnecting the pole base part of the pin on a green to two members and forming the pin device of a pin enclosing the outer periphery of the base part inclusive of the disconnected part with an elastic member and a supporting member for supporting the same.

The pin device A erected in the central part of the green B consists of the pin (a) and the supporting member (b) for supporting the same. The pin (a) is mounted with a flag (d) at the upper end of the pole (c). The pole (c) is divided at the base part to an upper member c. and a lower member c2 a restoring material 2 consisting of a columnar material, etc., of urethane, or rubber is interposed between the upper and lower members c1 and c2. The outer peripheries of the upper and lower members c1, c2 of the base apart inclusive of the disconnected part 1 are enclosed with a densely wound spiral spring (e). On the other hand, the supporting member (b) is composed of a pipe body (f) insertable with the spiral spring (e) of the size enclosing the body and a holding plate (g) of a circular shape or square shape, etc., spreading in a right angle direction at its top end.