MBW 17597 Motar Mixer Accessory Rubber Blade Kit Mortar mixer optional accessory Blade arms are held to the main shaft with conforming plates and hardware An engine shroud of heavy gauge steel provides protection and safety during operation and transport Reinforced steel latches ensure long life and positive engagement A cast iron trunnion and pillow block house a triple seal protection system utilizing both rigid steel washers and flexible synthetic grease seals