708625 are sold in packages of 10 only. 708626 are sold in bags of 25 only. Raindrip®'s "turbulent flow" PC (pressure compensating) drippers maintain their rated flow rate for 10-60 psi inlet pressure. These drippers can be used at the end of 1/4" tubing feeders or can be inserted directly into 1/2" Raindrip® hose. Ideal for heavy soil.