Rhin-O-Tuff Manual Comb Opener Heavy DutyDescriptionSpecificationsShipping Comb opener for all your 21 or 20 ring combs Due to freight costs, some orders may incur a delivery charge and this will vary depending on the order, particularly in regional areas. Delivery costs can be confirmed at the time of order. Some items require assembly, if you need help this can be advised at the time of order. A service fee for assembly installation may also apply. Delivery lead times may apply to some