Backstop Accessory for Delta Rockwell Belt or Belt Disc Sander. Contains the following parts: 406-03-088-0001 Back Stop 406-03-014-0004 Link 904-10-031-2097 Special Washer 901-09-070-6124 Special Screw 406-03-033-0001 Handle 432-01-027-0004 Serrated Nut 406-03-112-0003 Screw 904-10-031-2097 Washer 420-01-111-0003 Stud   Used on: 31-550 31-552 31-710 31-730 31-731 31-910 FINISHING MACHINES