These lightweight glass running and nippling pliers are engineered from a very strong, very durable plastic, and are sure to give you years of service. These benefit from the added leverage of the 8" version. It features snap in replaceable jaws, one set for running and one for nipping. Maximum glass thickness for these pliers are 1/4" (6mm) which makes it ideal for a glazier's workshop. These pliers are well balanced to fit in your hand without causing excess fatigue.