DNB 1/4" diameter bimini top quick release pin with pull ring are made from marine grade 316 stainless steel for durability, strong corrosion resistance and longer life in saltwater conditions. Sliding spring and drop cam for easy installation and removal. Size: Pin diameter: 0.24"/6mm, Ring diameter: 1.1"/28mm, Overall length: 1.6"/40mm. Please refer to our image for more detailed dimensions. Ideal marine hardware for bimini tops, boat tops and deck hinges, etc.