Standard, metric, or both! This kit makes your day much easier. All of those little boat items we lose over the years. 
Includes:
8 short bolts (1" or 30MM) 
4 long bolts (1.5" or 40MM)
8 washers
8 lock washers
8 nuts (10mm or 7/16 wrench sizes) 
4 "small" oarlock spacers
4 "large" oarlock spacers
2 Seat wheels w/ hardware.