Home Tops & Covers Bimini Top Accessories Stainless Steel Top Caps with Set Screw (Fits 7/8” Tube) Marpac Stainless Steel Top Caps with Set Screw (Fits 7/8” Tube) $11.19 Stainless Steel Top Caps with Set Screw (Fits 7/8” Tube) quantity Add to cart Product Details Product Details Fits 7/8″ Tube. Stainless Steel. Sold Each.