... CP 3. type : knob cylinder lock 4. key : normal brass key key material : brass / iron Finish : PB, CP, AB, AC, SN, ... with reasonable price Different kinds of brass knob ,such as Peanut button, sector button, rhombus button Type:Double lock cylinder/knob lock ... CP, SN, NBKey TypeS normal key, computer key Material brass body , brass core packing white box, color box, blister cardunit pricebased ...