1.Certification :ISO9001 ISO14001 2.Type:Single grouser 3.Surface Hardness:HRC42-49 4.Great variety mode 5.Excellent quality Detailed DescriptionTrack shoes used for the Caterpillar, Komatsu, Volvo, Hitachi, Hyundai...The track shoe pitch ranges from: 228, 216, 203,190, 171,154, and 135track shoe for bulldozer(single grouser) Compatible models for your reference Pitch(MM)CaterpillarKomatsu228D8K, ...