The Olsa Tools 3-pc Swivel Head Ratchet Set contains a 1/2", 1/4", and 3/8" swivel head ratchet. The ratchet heads rotate 270 degrees to accommodate a wider range of angles, making them ideal for working in tight spaces. Additionally, the 90-tooth gear-to-gear mechanism requires a 4-degree swing arc. With their molded handles and non-slip grip control, the ratchets are designed to reduce hand fatigue and slippage. Made with industrial-grade chrome vanadium steel, the ratchets are corrosion-resistant. The set has a limited lifetime warranty.