Description: Rubber nuts consist of a flanged neoprene rubber sleeve with a captive brass nut Tightening a threaded screw into the brass nut expands the insert to secure the fixing Vibration and shock resistant - dampens noise Can be used in blind holes and tubes and fits all M4 metric machine screws Great for mounting accessories on kayaks, canoes, boats, and any other marine vehicle Specification: Material: High Quality Rubber with Brass Nut Size: Approx. 12.15 x 10.7 mm/0.48 x 0.42 inch Thread: M4 Color: Black Quantity: 12 Pieces Package Includes: 12 Pieces Rubber Well Nuts Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!
