The perfect tool, adaptable to all LAST CHANCE PRESSES, for tuning your bow to perfection. Check your timing, draw length, cam lean and set your rest with more precision than ever. There are 2 different versions. #1 Attaches to both of our Ultimate EZ Presses. #2 Adapts to every other press we sale. Be sure to choose the version according to the press you have. Specify STANDARD to fit standard presses or ULTIMATE to fit ultimate presses.