Mercury Spitfire 4-Blade Aluminum Propeller Prop 9.3 x 11P 25-30HP 48-8M8026655 Part Manufacturer: Mercury Marine; Series: Spitfire; Part Number: 48-8M8026655; UPC: 745061894006 Size: 9.3 x 11 Pitch; Rotation: Right Hand; Material: Aluminum; Blades: 4; Splines: 10 Measures approximately 3 1/4" OD across the back of the hub The Spitfire provides 16-25% faster acceleration, superior holding with no penalty in top speed vs. a comparable 3 blade aluminum propeller Sold as seen in pictures; Note every computer shows colors differently; All measurements are approximate; Hardware and instruction/installation manual not included