ITEM: Adapter Back Plate for 8 Diam Self Centering Lathe Chucks BISON. MANUFACTURER: BISON. BRAND: Bison. MANUFACTURER PART: 7870108. Adapter Back Plate for 8 Diam Self Centering Lathe Chucks 0.98 Through Hole Diam, 4.02mm ID, 8.3 OD, 1.18 Flange Height, Cast Iron (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Lathe Chucks, Centers, Rests & Accessories. Lathe Chucks & Accessories. Lathe Chuck Parts & Accessories. Lathe Chuck Adapter Back Plates. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: BisonLathe Chucks, Centers, Rests & AccessoriesLathe Chucks & AccessoriesLathe Chuck Parts & AccessoriesLathe Chuck Adapter Back Plates.