Two-Piece Reversible Jaws; Each jaw is composed of top and bottom "master" jaw; Jaws can be easily reversed for extended clamping range; American Standard Tongue and Groove Style; ISO3442
Highly durable; Steel inner mechanisms are quench hardened to increase toughness
Plain back; Requires a fitted backing plate to mount to your lathe's spindle; CME fully machined backing plates are available
7 7/8" Body Diameter; 2 9/16" Through-Hole Diameter; For 0.16" to 7.87" Workpiece OD; For 2.56" to 7.87" Workpiece ID
6.5" Registration Diameter; 0.2" Registration Depth; Rear mounting holes are positioned on a 7.09" diameter circle