1)Name:spring clips,mattress spring clips. 2)Material:Gavanized steel or cold rolled plate,PVC cover. 3)Size: CL-75:inner crown:7mm,height:18.5mm,thickness:0.8mm,length:18.5mm 4)Packing:6000pcs/roll.6000pcs/ctn.clips can be packed in roll or in strip,as client's requirement. 5)Application:This clip is mainly used to buckle joints os springs with the fram of mattress and sofas.clips are connected with polyeehylene line.this clips is part component of the spring mattress.metal clips to secure the four sides of spring mattress stick fram border to the spring.durable and flexible.