Polar clamps are used in welding to attach the ground wire to the welded material, forming a welding circuit. Magnetic clamps allow fast, easy and secure attachment to objects made of steel. Thanks to their large contact area, they heat up less than tick clamps. Polar clamps are used in welding to attach the ground wire to the welded material, forming a welding circuit. Magnetic clamps allow fast, easy and secure attachment to objects made of steel. Thanks to their large contact area, they heat up less than tick clamps. Magnetic pole clamp 200A . Blister packaging. Dimensions 140 x 50 x 38 mm . Catalogue number 7812207 .