The Avenger A2020JCB in Chrome Steel Black is a 30'' column with a 17.5 mm Japanese female top attachment. The 17.5 mm receiver works with all common lights and grip tools that have a 17.5 mm pin. The 28 mm/ 1 1/8 in Junior base will fit any base that has a 28 mm/ 1 1/8 in receiver. Add these columns to traditional C-Stand bases, place them into rolling bases or attach them to clamps. This 3 section column will provide flexible solutions when rigging, placing lights or other grip accessories. Recommended Accessories: A2007CB, A2009CB, 297BBASE, 299BBASE, C150, C4465-1, C339UH, D600CB, G200-1, Roller Bag AVCSA1301B, D800KIT, D240, D250, D050, D220