hii need hex head SDS screw with neoprene washer blackCategory:ScrewsQuantity:20000 Piece PiecesTrade Terms:FOBDetails:Standard:DINType:Self Drilling ScrewsHead Code:Hex WasherMaterial:Carbon Steel stainless steelDiameter:6#-14#Length:1 2"-5"With Washer:EPDM WasherOEM:Acceptable