The Vaunt X Metric Ball End Hex Key Set includes nine sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm,8mm and 10mm. Made from strong S2 carbon steel, these hex keys offer strength and durability, along with a rust resistant coating for a long lifetime. The diamond tipped ends offer superior grip and the ball end allows for a secure connection in any position.The diamond coating bites slightly into the bolt to help to avoid cam outs as well as avoiding rounding the bolt. The set comes with a storage clip, which allows for quick access to the keys, while keeping them all together The ball ends allow for use at irregular angles and when combined with the diamond coating makes this set a real premium quality set. 1x 1.5mm x 92mm x 15mm 1x 2mm x 102mm x 17mm 1x 2.5mm x 115mm x 19mm 1x 3mm x 129mm x 22mm 1x 4mm x 144mm x 28mm 1x 5mm x 165mm x 32mm 1x 6mm x 186mm x 36mm 1x 8mm x 208mm x 42mm 1x 10mm x 234mm x 48mm 1x Storage Case Diamond coated tips for superior grip, reducing cam-outs and effort Ball shaped ends provides good connection in any position or angle Hex shaped ends provides perfect fit and efficient productivity Strong S2 carbon steel material with rust resistant coating