Features: Contains everything needed to fit any phono cartridge. This selection of bolts, nuts and washers cater for a full range of cartridge body depths. Manufactured from high strength stainless steel not aluminium since many cartridge manufacturers specifically advise against the use of aluminium. Please ensure that the cartridge is correctly fitted to the headshell making sure you for always use the shortest bolts that will accommodate your cartridge / headshell combination. The socket for head on the bolts allows for easy tightening with the supplied allen keys. The 6, 8, 10 & 12mm bolts are perfect for mounting the majority of cartridges on the market. The 16 & 20mm bolts are included for the deeper bodied cartridges and the M2 bolts (10mm & 16mm) are included for the majority of Thorens headshells. Specifications: Material: Aluminum Alloy Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 2 x M2.5 x 6mm stainless steel allen bolts 2 x M2.5 x 8mm stainless steel allen bolts 2 x M2.5 x 10mm stainless steel allen bolts 2 x M2.5 x 12mm stainless steel allen bolts 2 x M2.5 x 16mm stainless steel allen bolts 2 x M2.5 x 20mm stainless steel allen bolts 12 x M2.5 stainless steel nuts 12 x M2.5 stainless steel washers 2 x M2 x 10mm stainless steel allen bolts 2 x M2 x 16mm stainless steel allen bolts 4 x M2 stainless steel nuts 4 x M2 stainless steel washers 1 x 2mm Allen for key (for M2.5 allen bolts) 1 x 1.5mm Allen for key (for M2 allen bolts)