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Go Robert baraban and you will never need another. Built like a tank and every imaginable step

Check it out Complete RGC calibration for RBA gripper + CoC comparison levels

Weak Spring Complete RGC calibration for RBA gripper + CoC comparison levels

Weak Spring 1-1 = 11.4 kg 1-2 = 13.2 kg 2-2 = 14.6 kg ( ~ CoC Guide ) 2-3 = 16.2 kg 3-3 = 17.9 kg ( ~ CoC Sport ) 3-4 = 19.8 kg 4-4 = 21.9 kg 4-5 = 23.3 kg 5-5 = 25.7 kg 5-6 = 27.2 kg ( ~ CoC Trainer ) 6-6 = 30.5 kg 6-7 = 32.8 kg 7-7 = 35.4 kg 7-8 = 37.9 kg ( ~ CoC 1 ) 8-8 = 40.3 kg 8-9 = 42.2 kg ( ~ CoC 1.5 ) 9-9 = 45.6 kg 9-10= 47.0 kg 10-10 = 50.8 kg ( ~ CoC 2 )

Hard Spring 1-1 = 28.1 kg ( ~ CoC Trainer ) 1-2 = 31.4 kg 2-2 = 34.8 kg 2-3 = 39.3 kg ( ~ Hard CoC 1 ) 3-3 = 43.7 kg ( ~ CoC 1.5 ) 3-4 = 47.6 kg 4-4 = 52.4 kg ( ~ Hard CoC 2 ) 4-5 = 57.3 kg ( ~ CoC 2.5 ) 5-5 = 62.1 kg 5-6 = 66.7 kg 6-6 = 72.8 kg ( ~ Hard CoC 3 ) 6-7 = 76.7 kg 7-7 = 82.1 kg ( ~ CoC 3.5 ) 7-8 = 88.1 kg 8-8 = 92.4 kg 8-9 = 97.2 kg ( ~ CoC 4 ) 9-9 = 103.9 kg 9-10= 109.4 kg 10-10= 114.3 kg