Rod Head Made of Aluminum 7075, Holder made of Aluminum 6061-T6. It will never hurt your Bore Chember.
Generation 2nd, Anti-Roatation Adjustable Block designed.
Low Down block, Rod 360 Degree. Rise the Block, Anti-Rotation.
Handle touque 70 Ft Lbs. Fits Two Two Three for .750. 
This multi-use tool helps with ease of installation of barrel nuts without scratching the exterior. Also a great way to securely hold your  assembly for maintenance and upgrades.
Length 11".