Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
3M 20921, PSA Cloth Disc 348D, 80 X-weight, 1-1/2 in x NH, Die 150S, 7010299967
3M 94497, X5-P4PTCS1 Premium 4 Point Chin Strap with magnetic buckle for SecureFit Safety Helmet, 7100207541
Standard Abrasives 726002, A/O R6 Straight Precision Cartridge Roll, 3/8 in x 1-3/4 in x 1/4 in 100, 7100098743
3M 20921, PSA Cloth Disc 348D, 80 X-weight, 1-1/2 in x NH, Die 150S, 7010299967
3M 94497, X5-P4PTCS1 Premium 4 Point Chin Strap with magnetic buckle for SecureFit Safety Helmet, 7100207541
Standard Abrasives 726002, A/O R6 Straight Precision Cartridge Roll, 3/8 in x 1-3/4 in x 1/4 in 100, 7100098743
Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
