1.good compressing strength 2.excellent hardness, heat distortion 3.good self-lubricating abrasion 4 ... excavator models: Hitachi: UH07-7O/N, EX200-1/2/3/5/6, EX220-3/5/6, EX120-3 ... 5/6, EX300-3/5/6, ZAXIS55, ZAXIS70, ZAXIS100-1/2, ZAXIS200, ZAXIS210, ZAXIS230, ZAXIS240, ZAXIS330, ZAXIS360, ZAXIS450Hyundai: R225- ... /6, SK60-5/6Kato: HD700-5/7, HD770-1/2, HD800-5/7, HD820, HD900-5/7, HD880Volvo: EC140B ...