Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
Insize 6313-27H32, SETTING RING, 27/32" dia, 6928640357589
Insize 4635-1B19N, WHITWORTH PIPE THREAD RING GAGE(G SERIES), G 1/4 - 19_ NOGO, 6928640375439
3M 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5220TRI-10I, 5 inch UH, 220, 7100202878, 10 per pack
Insize 6313-27H32, SETTING RING, 27/32" dia, 6928640357589
Insize 4635-1B19N, WHITWORTH PIPE THREAD RING GAGE(G SERIES), G 1/4 - 19_ NOGO, 6928640375439
3M 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5220TRI-10I, 5 inch UH, 220, 7100202878, 10 per pack
Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
