Product Name : Torx Screwdriver Bits;Bit Type : T30 Tip Diameter : 6mm / 0"; Diameter : 8mm / 0" Total Length : 50mm / 2";Color : Gray Material : Metal;Weight : 114g These Torx Screwdriver Bits are with a bit magnetic design, ( just use a magnetizer to it if the magnetic reduces after decades use) Easy to install in your screwdriver handle. Great alternative for missing, bent or damaged screwdriver bits. Package Content : 10 Pcs of Torx Screwdriver Bits Note:Light and assorted reveals can cause the colour of the thing in the picture a piece varied from the genuine thing. The size allowed error is +/- 1-3cm.