These are the proper Banjo bolt needed for 90% of GM Brembo Calipers.

M10 x 1.0 Fine Thread

20.75mm length not including the head which is .82 inches

They pretty much work for all GM brembo brake calipers.

Application for:

2004-13 Cadillac CTS-V Front and rear Both 6 Piston and 4 piston calipers

2010-16 Chevy Camaro SS and ZL1 Both 6 piston and 4 piston calipers

2009-13 Chevy Corvette ZR1

2006+ Chevy Corvette Z06 with PBR calipers

2015-17 Chevy Corvette Z51 Stingray and Z06

2008-09 Pontiac G8 GXP

2013-17 Cadillac ATS 

2013-17+ Buick Regal

This is perfect for people who bought these Calipers to upgrade their vehicle to these Brembo Calipers.