... 4.Usage:boat&yacht&ship Features:Size:0.5kg,1kg,2kg,2.5kg,3kg,3.5kg,4kg,5kg,7.5kg ... 60kg,80kg,120kg1.Material: Stainless steel-AISI316 AISI304 ,alloy casting and carbon steel.2.Technics : Precision Cast3.Surface : ... Galvanized.4.Process:Silica sol, lost wax process,prescision casting,electro-polishing,hand-polishing5.Delivery time:25-30 days ... realize win-win cooperation :) stsinless steel marine casting