Robust F-shape clamps with malleable cast iron brackets for strength and a galvanised steel slide rail for a smooth action.
They have plastic protection caps and virtually unbreakable handle grips.
420 is the style of clamp, second number relates to the throat and the third number is the maximum opening capacity.
- 420-50-100: Capacity 100mm (4in). Jaw length 50mm (2in).
- 420-50-200: Capacity 200mm (8in). Jaw length 50mm (2in).
- 420-60-120: Capacity 120mm (5in.) Jaw length 60mm (2 1/2in).
- 420-60-300: Capacity 300mm (12in). Jaw length 60mm (2 1/2in).
- 420-80-160: Capacity 160mm (6 1/2in). Jaw length 80mm (3in).
- 420-100-200: Capacity 200mm (8in). Jaw length 100mm (4in).
- 420-120-250: Capacity 250mm (10in). Jaw length 120mm (5in).
- 420-120-300: Capacity 300mm (12in). Jaw length 120mm (5in).
- 420-120-400: Capacity 400mm (16in). Jaw length 120mm (5in).
- 420-120-500: Capacity 500mm (20in). Jaw length: 120mm (5in).
- 420-120-600: Capacity 600mm (24in). Jaw length 120mm (5in).
- 420-120-1000: Capacity 1000mm (40in). Jaw length 120 mm (5in).
- 420-120-1500: Capacity 1500mm (60in). Jaw length 120 mm (5in).
- 420-140-400: Capacity 400mm (16in). Jaw length: 140mm (5 1/2in).
- 420-175-400: Capacity 400mm (16in). Jaw length 175mm (7in).