irwin quick-grip bar clamp, one-handed, mini, 6-inch (2), 12-inch (2), 4-pack (1964748) blue, yellow

Non-marring pads grip firmly and protect work
One-handed triggers release the clamps instantly
Resin construction with hardened steel bars to prevent flexing and bending
140 lbs. of clamping force
Ideal for clamping smaller workpieces and working in confined areas