Dear Sir/Madam, This is DongTom from CN.Can provide free samples, please contact me QQ :794717961 I'm looking for products with the following specifications: Plz: 1- first ask them about 45 , since as I see there is only 40 , 50, 60 , ... 2- if there isn't any 45, plz inquiry for 40 and 50 3- by the way plz make sure that they are 40*7 & 45*9 (50*9) 4- equal qty. of both type are required to reach to 20 MT