This five piece set includes three dual head nylon pry tools, one long board pry tool and one metal spudger. Nylon is a non-abrasive, yet durable material. It makes them effective at opening cases and not leaving any scratches. It also maintains their shape after many uses. Nylon tools are trusted by manufacturers for servicing warranty repairs on devices like the iPhone. Lengths are 6 in., 4.75 in. and 5.5 in. The metal tool provides more leverage and is best for separating parts that are glued together by the manufacturer. You can also use it to scrape off any glue that is left after separation. Length is 7.4 in.