Stainless Steel Quick-Release pin from the Jergens Kwik-Lok Pin brand. Only SINGLE BALL in pin to one side. 804072

Style: Detent Pin with Single Ball
Pin Diameter: 3/4" 
Grip Length:  3-1/2"
Double Sheer Strength: lbs

Pin Body: CRES 303 Stainless with CRES 316 stainless spring and ball