... mass:30-50T 5.Customization Service Tri-Ring / Sitom BrandSITOM Heavy-duty Tractor Truck 6*4 STQ4250L7Y9S3 Standard-Model * Company Feature: 1 ... . Flexible Overseas Marketing Strategy5. Intimate and Humanized After-Service SITOM Heavy-duty Tractor Truck 6*4 STQ4250L7Y9S3 Standard-Model * Product Feature: 1 ... reverse gear,rated input tonque 1600N.MGearbox ratioForward:12.10,9.41,7.31,5.71,4.46,3.48,2 ...