https://www.instagram.com/p/CLWNbHKnelh/?igshid=7ffl3h8xvih1 https://www.facebook.com/101771248248657/posts/251594936599620/ for 1 year use 2mm hook size for 2 year use 2.50 mm hook size for 3 year use 3 mm hook size for 4 year use 3.50 mm hook size for 5year use 4mm hook size for 6 and 7 use 4.50 hook size