Click to expand Tap to zoom Lisle, Heavy Duty Circuit Tester Basic for Univ. by Lisle Save £-25.93 £25.93 | / SKU MCS530805 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionLisle, Heavy Duty circuit tester basicDetailsBasic Heavy Duty. Up to 12V. Fully insulated and comes with reinforced ground clamps. Note: Not intended for computer circuits. Note: See 530739 for replacement bulb.Univ.