Single Row Inch Sizes Taper Roller Bearings Part No：LM772748/LM772710 Size(mm): 488.95×634.873×84.138mm Weight (kg)： 64kg Material：GCR15SiMn If you have any problem, please contact with me as soon as possible. Best regards Helen Luoyang Longda Bearing Co.,LTD. Add: NO. 82, Zhongzhou West Road, Luoyang city, Henan, China. 471003 Tel:0086-379-64985493 cellphone:0086-15036552603 Fax:0086-379-64924823 Email:longda@ldb-bearing.com MSN:ldbbearing@hotmail.com SKYPE: ldb-bearing001 website:www.ldb-bearing.com