250 PC M2 0.251"-0.500" Steel Metal Plug Pin Gage Set Minus -0.0002" Gauge Set Steel plug gages Size: 0.251-0.500" ; Set qty: 250 pieces Length: 2" ; Accuracy: +.0000", -.0002" Uniform 2" overall length ; Center less lapped with 10 micro finished Quantity:1 ; Weight: 20 lbs; Case included; Case Overall dimension: 12-3/4''L x 16-3/4''W x 3-1/8''H