A heavy duty string line holder designed for durability on the job site. If needed, the center post accommodates a ¾” diameter grade stake for holding the StringARM base in place on open graded aggregate (permeable), there are also (3) 3/8” diameter holes for landscape spikes to secure it on dense graded aggregate base. StringARM allows for quick string height adjustment without tools. Perfect for use with screeding and leveling equipment.

Base plate is 16 x 18 inches, center post is 18 in tall, arm is 7 in long.