Check the listing for details. Archery Bows Square 33x9mm for Recurve Compound Bowstrings Archery Green. Condition: New with tags. Listed at 21.04 USD. What is this?The T-square can be fixed on the string above and below the nock point, with two measurement units, and the markings are clear and easy to read, which is convenient to use. The brass buckle and arrow nock pliers can help lock the position of the string nock point, and just a little adjustment can improve your archery accuracy.What will I get?The Archery Bow Square Kit is in size of: T Shape Precision Ruler: 33 x 9cm / 13 x 3.54 inch (LxW); Pliers Length: 11 x 8.4 cm / 4.33 x 3.3 inch (LxW); Crimp-On Nocking Points: 5 x 3 x 6 mm / 0.2 x 0.12 x 0.24 inch (LxWxH)In the package: 1 pcs x Green T Shape Precision Ruler; 1 pcs x Green Pliers; 6 pcs Red,6 pcs Black x Crimp-On Nocking PointsAre there any advantages of the product?1.