This is a set of Two 30mm coupler pins 
Includes two Pins.
listing includes 2 pieces total.
 
Diameter                                          30MM OD         1.18"
Overall Length                                 8-5/8"                219MM
Length from center of hole to end   8-1/8"                206MM
hole diameter                                   3/8"                   
Made of 4140 alloy steel
Hardened and tempered
non chrome plated for use with coupler