All Bartlett Poles are professional grade for the professional arborist. These Bartlett fiberglass poles are light, strong, and stiff. These square yellow sectional poles are even stiffer and easier to grip than the round poles. However, they are also heavier and more costly. Square poles feature a non-conductive built-in, internal button-lock connection system. These professional grade poles are designed for use with the pole pruners, pole saws, or wire raising tools. Whether you require a new pole or a replacement for your worn or damaged pole, Bartlett Fiberglass Poles are an excellent choice!