Alloy Solid Tines aerate without the work of cleaning up the mess of cores and debris left behind with conventional core aerating. GFA Solid Tines are manufactured from a special high-carbon steel bar and heat treated to RC45-48 in our own heat treat facility. They are available in all standard sizes but are especially popular in the smaller diameters for aerating in the summer months to relieve the stress on greens by allowing water, air and nutrients to easily flow into the root zone. With the combination of small holes and no cores, play can be resumed immediately.