The Avenger C622 is the smallest junior steel stand extension made. It features the a 28 mm/1 1/8 in pin that allows mounting to all junior stands. This small 28 cm/11 inch extension has a combo or universal top which has a built-in 16 mm/ 5/8 inch retractable spigot and a junior 28 mm/1 1/8 in receiver. Recommended Accessories: E200, C155, 087WBK, G200-1, G300, D200, D500, E390, 163-10, F831TH, 163-38, C624, C626