Set of four useful sizes: 7.5, 10, 15 and 20cm. Durable and strong clamps with swivel jaw pads. Reinforced nylon construction with anti-slip handles. 6pc 7.5cm (3") clamp - max. jaw opening 30mm. 4pc 10cm (4") clamp - max. jaw opening 38mm. 2pc 15cm (6") clamp - max jaw opening 65mm. 2pc 20cm (8") clamp - max jaw opening 85mm.