Square Boss Head Die casted alloy, accepts article square and round section up to 16 mm diameter at right angle to each other. Will also hold flat articles such as rulers, magnets, drawing boards etc. SKU: CLT056 Related Items: Aspirator Bottle Polypropylene Reagent Bottle With Glass Stopper Single Adjustment Two Prong With Boss Head Double Adjustment Two Prong With Boss Head << return to products