Jorgensen 30-in Parallel Jaw Clamp in the Clamps department at Lowes.com
Pony Jorgenson 33804 E-Z Hold Series Hobby Bar Clamp, 50 Pound, 4 in Max Opening Size, 1-1/2 in D Throat, Steel Body: Bar Clamps, Pipe Clamps & Web Clamps (044295338042-1)
Jorgensen 6-in Handscrew Clamp in the Clamps department at Lowes.com
Jorgensen 30" Heavy Duty Steel Bar Clamp - Walmart.com