DescriptionThis is a professional putting pointer aim line corrector for aim reference to hole. It can be used indoors or outdoors. Easy switch with ON/OFF button. Perfect for anyone wishing to get more accuracy and proficiency on the putting green. Easy install, just attach to the putter shaft, and you're ready to go.Feature- Color: Black- Material: Plastic- Powered by: 2 x LR44 Button Battery- Size: Approx. 6.5 x 2.4 x 2.4 cm/2.56 x 0.94 x 0.94 in (L x W x H)- This is a professional putting pointer aim line corrector which projects point for aim reference to hole.- You can use the putting aid indoors or outdoors.- Easy to operate, with ON/OFF switch button.- Perfect training tool for practicing and training putting accuracy and proficiency on the putting green.- Easy install, just attach to the shaft, and you're ready to go.