7 Excavating machines, mechanical loading shovels and, in general, machines for land removal and public works, namely, excavators, rope shovels, loaders, bulldozers, draglines excavators, load hauling and dumping machines, as well as cutter suction dredgers, backhoe dredgers, trailing suction hopper dredgers and grab dredgers; spare parts and tools being parts of machines for the same, namely, ground engaging tools being adapters, teeth, lip and wing shrouds, heel shrouds, wear runners, weld-on bases and bucket protections; attachments for excavators, namely, ripper implements, all kind of buckets, clams and dippers, stick rakes, trenching implements; loader bucket teeth for excavators; protectors for excavator loader bucket teeth; loader buckets for excavators; machine tools, namely, ground engaging tools being adapters, teeth, lip and wing shrouds, heel shrouds, wear runners, weld-on bases and bucket protections; ground engaging tools for earth-moving machinery, namely, ground engaging tools being adapters, teeth, lip and wing shrouds, heel shrouds, wear runners, weld-on bases and bucket protections; ground engaging tools for bucket protection of earth moving machinery motors and engines, except for land vehicles, namely, ground engaging tools being adapters, teeth, lip and wing shrouds, heel shrouds, wear runners, weld-on bases and bucket protections; agricultural implements, except for land vehicles, namely, ripper implements, all kind of buckets, clams and dippers, stick rakes