SHALL 4-Pack Bar Clamps Set, 12-Inch Light-Duty Drop Forged Steel Bar Clamps, Steel F Clamps with Max 450Lbs Load Limit for Welding, Woodworking, Metal Working, DIY and CraftsBasic Size Contains 4 packs of 12" (30. 48cm)drop forged steel bar clamps with a 3" (7. 62cm)throat depth and a maximum load limit: 450 lbs. Maximum opening capacity: 12 in. Powerful Clamping Force With a clamping force of up to 450 lbs, this medium duty steel bar clamp is capable of securely holding many metal and wood workpieces. Robust Build Quality Drop forged steel construction provides this F clamp with greater impact and high temperature