Starrett snugs 657S 5/16” X 1/4” (x3). Condition is "Used". Shipped with USPS First Class. Item shows signs of cosmetic wear from previous use (see all pictures). Large hole measures .3125 small hole measures .250. Smooth action two have double split one has a single split (see all pictures). Priced to sell. You are buying all 3 for the list price!