Products OthersSlide Back Heavy Duty Top Slide & Top Cap Assembly 156-66155-00 P/N:156-66155-00 Tube O.D.:1"(25.4 mm) Pin Size: 5/16"-18(8 mm) Wt.(g): 280 With 1/4-28 Set Screws You May Also Be Interested In Top Slide 956-09714-00 Top Slide 956-09700-00 Clamp with Nut 956-09818-00 45° Round Base 956-09708-00