4 Pcs Quick Release Pins w/ Drop Cam & Spring, All Parts Are Made of 316 Stainless Steel Convenient Quick Release Pins for Bimini Tops, Boat Tops, and Support Poles Size: 1/4" (6.3mm) Diameter, Usable Length: 0.9", Overall Length: 1.66" Built to Last with Marine Grade 316 Stainless Steel - Resistant to Seawater Corrosion Easy Adjustment with Slidable Spring and Drop Cam for Various Bimini Sizes Versatile Applications Include Stainless Steel Pipe Clips, Ship Outfitting, and Shipbuilding Package Includes: 4 Quick Release Pins with Drop Cam & Spring, All Parts Crafted from 316 Stainless Steel