1.MATERIAL: Made of high strength heat treated alloy steel and plated for rust protection. These make the puller tough and sturdy enough to achieves a good anti-corrosion and anti-rust effect. 2.USING: Designed to remove 2, 3 and 4 blade propellers on inboard shafts. These tools have fine thread screws to enable a strong pulling force with little effort. 3.NOTE: This propeller puller is recommended for 1 1/4 Inch propeller shafts only 4.Advantages -- The tool has an exclusive swiveling screw point which could prevents damage to the ends of drive shafts, also it has fine thread screws to enable a strong pulling force with little effort. 5.100% SATISFACTION GUARANTEE: If you're not 100% satisfied with the tool, simply return it for a full refund in 30 days, no questions asked money back guarantee. Premium Support & 12 Months' Warranty.