Description This 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.Packing list: 1 x Putter Pointer Aim Line Corrector