Material: grey iron GG20/FC200
process: sand casting mold machining CNC precision machining
hardness HB: 140-210
size: 30*30*15mm general tolerance minimum +/-0/02mm
gross weight: 60g
net weight: 45g
surface treatment:environment firendly anti-rust oil protection
testing:tensile test 200 MPA
packaging:wooden case machine parts/mechanical components grey iron sand cast.