810
Lowell 810 Speaker Square 8-inch 15W Dual Cone Driver - missing screws
You will find that the unbranded generic version is a workable alternative to expensive brands.
Wilton 810 C-Clamp, 10", Steel, Regular Duty, 6000 Lb.
I have seen WILTON equipment in professional shops for decades without fail.
WILTON 810 C-Clamp,10",Steel,Regular Duty,6000 lb. 18G709
This 8100 unit is built to last through daily use in a busy shop.