The CX-32 Screed Chair – Adjustable, is available in 1/2″ diameter x (2-1/2″, 3-1/2″, 5-1/2″) heights for slabs from 4″ up to 11-1/2″ and a 3/4″ diameter x 5-1/2″ height for slabs from 9-1/2″ up to 16″.