91-586 Product Blade Replaces for Oregon Gx21785 17-1/ Bolens - 173-0634 Measures approximately 17.06 x 2.55 x 0.19 inches PRODUCT DETAILS part# 91-586 Measures approximately 17.06 x 2.55 x 0.19 inches INCLUDES (1) Blade Gx21785[467] This part with the following: Bolens - 173-0634 - AM137757 Quality assurance: Careful design, excellent processing. Made of highly durable materials, rigorously tested, compact and sturdy, and long-lasting. Super durable, high-quality substitute. Made of durable high-quality materials and rigorously tested by the manufacturer. Made of durable high-quality materials and rigorously tested by the manufacturer. This is a manufacturer replacement. Functionally equivalent to the previous components. The product description is carefully designed and finely processed. For precise fitting and wise selection. Our trusted accessories ensure smooth operation of your accessory tools. Please confirm the model above before placing an order. Please double check the dimensions and photos to ensure proper fit.