Features: Contains everything need to fit any phonos cartridges . This selection of bolts, Nut and washers cater for a full ranges of cartridges body depths. Manufactured from high strength steel not aluminium since many cartridges manufacturers specifically advise against the use of aluminium. Please ensure that the cartridges is Accurately fitting to the headshell making sure you for always use the shortest bolts that will accommodate your cartridges / headshell combination. The Tool for head on the bolts allows for easy tightening with the supplied Hexagonal key. The 6, 8, 10 & 12mm bolts perfect for mounting the majority of cartridges on the market. The 16 & 20mm bolts included for the deeping bodied cartridges and the 2mm bolts (10mm & 16mm) included for the majority of headshells. Specifications: Material: Aluminum Package Includes: 2 x 2mm.5 x 0.6cm steel Hexagonal bolts 2 x 2mm.5 x 8mm steel Hexagonal bolts 2 x 2mm.5 x 10mm steel Hexagonal bolts 2 x 2mm.5 x 12mm steel Hexagonal bolts 2 x 2mm.5 x 16mm steel Hexagonal bolts 2 x 2mm.5 x 20mm steel Hexagonal bolts 12 x 2mm.5 steel Nut 12 x 2mm.5 steel washers 2 x 2mm x 10mm steel Hexagonal bolts 2 x 2mm x 16mm steel Hexagonal bolts 4 x 2mm steel Nut 4 x 2mm steel washers 1 x 2mm Hexagonal for key (for 2mm.5 Hexagonal bolts) 1 x 1.5mm Hexagonal for key (for 2mm Hexagonal bolts) note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.