Model number: 32702 Material: Drop forged steel Heat Treated Size: 50x100, 50x150...120x250 GS approved 1. Material: Drop forged steel. Heat Treated.2. Size: 50x100, 50x150, 50x200, 50x250, 50x300, 80x150, 80x200, 80x250, 80x300, 80x400, 80x500, 120x200, 120x250.3. Frame surface: Chrome Plated4. Grip: Plastic grip.5. Certificate: GS. Wood Clamp F type, Drop forged, Heat Treated