Features:

• Ball gages are ground and lapped chrome steel

• Hardened to 63RC.

• Grade 24 accuracy - AFBMA certificate

• Within .0001" of actual size.

• Sphericity within .000025".

• Surface finish to 1.5 micro inches.

• 52-438-766 Set includes 26 pairs

• Pair sizes in inches: 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 17/32, 9/16, 19/32, 5/8, 21/32, 11/16, 23/32, 3/4, 13/16, 7/8, 15/16 and 1"