Manufactured from drop forged, hardened and tempered Chrome Vanadium Steel Ergonomic T-handle for controlled drive and reduces fatigue Black Oxide finish for corrosion protection Ball-ended design to enable usage up to 25° angle Fits most domestic central heating pump heads Hex Key Sizes: 4mm x 100mm, 5mm x 150mm Specifications: Dimensions: H:28.2 x W:13.2 x D:2.4 cm Weight: 2.0 kg Colour: Multi Guarantee:1 year Model Number: KB-HBPH0002