... hard stone and ore after the blastin PC360 1.6 Rock BucketCenter Distance: 510; Bucket Spindle Diameter:90; Bucketlug Width ... bottom, add side protective plate and protective plate1.Excavator BucketStandard,rock,heavy duty bucket2. Excavator brandKOMATSU, KOBELCO,HITACHI,KATO, SUMITOMO, ... designed reasonably from shapes, materials, and stress features, etc. Rock Bucket/komatsu bucket /excavator bucket