Triplex 3-In-1 Premium Football Kicking Tee for Kickoff Practice, 1” - Ball Holder Tees for Footballs - Kicking Block and Accessories for Adults, Kids, Coaches. MULTIPLE KICKING ANGLES: The Triplex kick-off tee boasts a patented design that featuring an onside kick notch and a reshaped middle recess - perfect for practicing low, squib and onside kicks.