What are your favorite tools to remove cotter-pins? : r/aviationmaintenance
The "wrong" tool for the job? - Zero to Cruising
A Tool You have not Seen Before - YouTube
Amazon.com: Swpeet 121Pcs 4 Sizes White Zinc Lynch Pin with Ring and 304 Stainless Steel Cotter Pin Hair Pin Hitch Pin and R Shape Clips Fastener Fitting with Needle Nose Pliers Kit