Arm and body made from ZA-12 alloy; machined steel post; solid brass clamping knob
10" post, 8" clamping capacity, 8" throat capacity
Retrofit shorter hold-down post available separately; 5-1/2" long, provides about 4" of clamping capacity
With arm free to pivot independently, all levered forces are exerted downward, without any losses due to horizontal slippage from canting action of hold-down post
Clamping force is infinitely variable by tightening clamping knob
Fine barb-shaped grooves on post resist upward forces
