Irwin set of 8 THandle Hex Key Set Features Irwin T10771 8 piece T Handled Hex Key Set are manufactured from highstrength & durable chrome vanadium steel with an ergonomic design to ease gripping & handling improving the torque performance The keys also have a special surface treatment to prevent oxidisation & corrosion Specification p Manufactured from chrome vanadium steel Ergonomic design for ease of gripping & handling Special surface treatment to prevent corrosion 8 Piece set containing 20mm 25mm 30mm 40mm 50mm 60mm 80mm & 100mm Net Weight 1616kg