Dear SirWe need P&H crawler crane undercarriage.Please find below our machine details for your use:- P&H crawler crane 5045- Model 1988 March- Serial No. 45FK00127- Roller serial no as shown in the existing one: 2418N, 1894DZI hope this information will be usefull to you, if you require further infomation, please do not hesitate to contact me.Sincerely YoursCountry:United Arab Emirates