Contents: Package included: 1 x Full SIM & Micro SIM to Nano SIM card cutter 3 x black nano sim card adapter (for iphone 4 and 4s phone SIMuse) 3 x black micro sim card adapter 3 x black standard sim card adapter Full SIM to Nano SIM: Insert directly to cut (if you have a standard sim(full sim), you want to cut it to nano sim, just insert and cut;); Micro SIM to Nano SIM: Convert Micro SIM to Full SIM then cut.(if you have the micro sim, you will need to put your micro sim with the METAL adapter cames with the cutter(in the package) then place into the sim cutter to cut to the nano sim. (find the attachment photos helpful.) The cutter is made of high-quality stainless steel, and the cutter core adopts the wire cutting technology to ensure the high precision. Easy operation. This pack also comes with 3 sets free Nano SIM & Micro SIM & SIM card adapters to adapt from nano to micro/nano to standard, and micro to standard.