A-P6X50-AI Roll Pin, 6 MM x 50 MM, 5 packFive New Aftermarket Replacement Roll Pins 6 MM x 50 MM (5 Pack) This listing is for a pack of five 6 MM x 50 MM slotted spring roll pins (also known as tension pins or split pins). Roll pins feature an axial slot along their length that allows the pin to compress during insertion and spring outward to grip the bore wall, creating a secure, vibration resistant connection. They are widely used throughout agricultural equipment, construction machinery,