... -52HRC 4)Impact force:>=16J High quality model 320 excavator RC bucket teeth (1U3352RC) Advantages : Over 12 years experienceHigh quality control,Competitive price, Fast deliverySmall ... ,etc.For machines: Komatsu, ESCO,JCB,Hyundai,Daewoo,Hitach,etcHeat treatment: Quenching and tempering treatment Hardness: Teeth : HRC48-52 ,Impact value >=16J ...