Just about any material is OK. But the Ranger really shows its top performance when it comes to wood. Size (L x W x H):  91 x 27 x 23 mm TOOLS large blade  small blade  corkscrew  can opener with -small screwdriver cap lifter with -screwdriver -wire stripper reamer, punch  key ring  tweezers  toothpick  scissors  multi-purpose hook (parcel carrier)  woodsaw  chisel  nailfile with -metal file -nail cleaner -metal saw fine screwdriver 2mm Note: You must be over-18 to buy a pen-knife. We will require a photo of your ID emailed to us before we ship (meanies aren't we?)