Description: It is designed as T shape which can be conveniently fixed onto the body of the putter. During the putting practice,just putting the frame under the armpit can shape a triangle for two arms so as to make the two arms stable naturally like pendulum. This assitant frame can be adjusted based on the height of players, which help the beginners to shape correct gesture. Suitable for golf beginner. Made of high quality aluminium alloy and plastic, lightweight and durable, easy to carry. Specification: Material: Aluminium Alloy + Plastic Color: Silver Pole Size: approx. 31 x 1.2cm (L x D) Rotatable Clamp Package Includes: 1 Piece Golf Putting Aid Tool