About these itemsDurable Materials for Heavy Duty Use: The handle of each bar clamp is crafted from high-strength PA6+GF30% plastic, providing greater durability than ABS, while the slide bar is made of robust 45# carbon structural steel. This combination ensures reliable, crack-resistant performance even under heavy-duty tasks.Versatile Jaw Opening Sizes: VEVOR bar clamps are available in multiple sizes to suit various woodworking needs. Models range from 6-inch to 50-inch jaw openings, allowing precise adjustment and positioning for a range of wood sizes, ensuring suitability for different projects from small joinery to large assemblies.High Load Capacities: The load limit of these clamps varies by model, from 150 lbs to a robust 1100 lbs, making them versatile for a wide array of clamping needs. These clamps securely handle materials including wood and metal, suitable for both general woodworking tasks and heavy-duty applications.Efficient Single-Handed Operation: With features like an automatic lock, quick-release lever, and a simple-to-use design, these F-clamps allow for efficient single-handed operation, saving time during assembly and setup.Quick Clamping and Spreader Conversion: Certain models in this set offer a convenient clamping-to-spreading conversion, allowing you to quickly switch modes with a button. This flexibility enhances the clamp's adaptability, from precision clamping to reverse spreading applications.Key DifferencesLoad Capacity: Options range from 150 lbs in the smaller 6" models to 1100 lbs in the 50" models.Jaw Sizes: Available jaw openings include 6", 12", 24", 36", and 50" to suit a wide variety of projects.Material and Finish: Some models use PE for jaw material, while others use PA6+GF30% plastic, with select models featuring powder-coated finishes.SpecificationsItem Model Numbers: F150-6&F150-12, F1100-50, F300-12, F300-24, F600-36Jaw Opening Sizes: 6", 12", 24", 36", 50"Depth: 2-3/8" to 3-1/3" (60.3 mm to 84.6 mm) based on modelCapacity: 150 lbs to 1100 lbs depending on sizePlastic Shell Material: PA6+GF30% (for models except F600-36, which uses PE)Slide Bar Material: 45# Carbon Structural SteelProduct Dimensions: Range from 12.8" x 6.3" x 0.9" for the 6" model to 57.1" x 5.9" x 2" for the 50" modelPackage Content6" Models: 4 x 6" Bar Clamps12" Models: 2 x 12" Bar Clamps24" Models: 2 x 24" Bar Clamps36" Models: 2 x 36" Bar Clamps50" Models: 2 x 50" Bar Clamps1 x User Manual