Pre-tinned soldering tips with 5.8mm external diameter. 868786 is compatible with Silverline 60W Soldering Irons (633838 and 503456). 675250 is compatible with Silverline 100W Soldering Irons (868784 and 548911). Includes 1 x bent tip, 1 x cut-off tip, 1 x point tip and 1 x chisel tip.