ITEM NAME:12 Piece M6 Rubber Well Nuts Kit Stainless Steel Screws for Kayak Canoe Boat Description: Rubber nuts consist of a flanged neoprene rubber bushing with a captive brass nut. Tightening a threaded screw into the brass nut expands the insert to secure the fixing. Resistant to vibration and shock - dampens noise. Fastens in blind, burr-free holes. Used with standard metric machine screws (screws included), simple to install. Great for Kayaks, Canoes, Boats, and other marine applications. Specification: Nut Material: High Quality Rubber with Brass Nut Screw Material: 304 Stainless Steel Color: Black, Silver Screw Size: M6 x 30mm Quantity: 12 pieces Package Includes: 12 Pieces Well Nuts Kit with Screws SKU: DMO0021808066001203.Screw Size: M6 x 30mm. Rubber nuts consist of a flanged neoprene rubber bushing with a captive brass nut. 12 Pieces Well Nuts Kit with Screws. Screw Material: 304 Stainless Steel. Nut Material: High Quality Rubber with Brass Nut.