stainless steel security lock fittings high quality with competitive price With solid long plateNice finish, with high quality processingSpindleHollow, split or solidSize, 7*7MM, 8*8MM, 9*9MMLength, 100MM, 110MM or any size neededInsert material,Brass, steel or stainless steelAccessory,M4 break bolt or wood screwsAllen key,Hardened steelSpring,200,000 cycles security door lock fittings