Flexable Gooseneck Arm Universal Magnetic Stand This Flexable Gooseneck Magnetic Stand accepts all AGD Dial Indicators with lug backs and Test Indicators with stems 1/8" - 1/2" diameter. Features Include... Flexible Gooseneck Arm Overall stem length: 13" Single lever operation to lock arm in place Permanent magnet with On / Off switch Stem flexes 360°