Spring loaded ball in the tip of the pin holds it in place 1411105 | Phoenix Contact, M20, 20mm Hole Diameter, 316 Stainless Steel Drop Cam Lanyard Pin Uxcell 2-Pack Quick Release Pins, 316 Stainless Steel 6.3mm Dia., 30mm Drop Cam Spring Pin Lanyard Stainless steel pull pins secure the eye end and the boat hinge allowing a quick release feature when you want to remove your boat frame Marine grade 316 stainless steel construction, corrosion resistant and durable 35 mm Diameter 316 Stainless Steel - AMB Steels Description: 1) Quick Release Ball Pin for bimini top, boat, deck hinge 2) 5/16 (7., 5mm) Wide, 1-1/2 (38mm) Long, 1/4 (6., 3mm) Diameter 3) Marine grade 316 stainless steel construction, corrosion resistant and durable 4) Spring loaded ball in the tip of the pin holds it in place 5)Widely used in various shipbuilding, ship outfitting Package Includes: 2 Pieces Quick Release Pins