ORIGINAL BRIGGS and STRATTON Lawn Mower Spool Hole spacing (mm): 63 Weight: 346 g For Models : 401500, 405500, 407700, 40G700, 40H700, 445500, 445600, 44L700, 44M700, 44M900, 44P700, 44P900, 44Q700, 44Q900, 49G500, 49L900, 49M800, 49M900 Reference : 18270324 Original code : 592846 799651 Briggs and Stratton SR m