Durable Material –– The KastKing Kalibrate fishing accessory is molded with tough amorphous polymer material which is resistant to heat, chemicals, and impact. On key components we use durable thermoplastic material which possesses a high degree of mechanical strength, toughness, and is impact resistance INTEGRATED LINE COUNTER – The built-in line counter tells you how much line you are adding to your casting reel or spinning reel. The Kalibrate makes it very easy to evenly split a spool of line between two reels, no more putting too much line on one reel and leaving yourself short on the second reel. The Kalibrate is also ideal for adding the correct amount of backing on a spinning reel or on a fly reel PATENT PENDING LINE SPOOLING TOOL– The innovative KastKing patent pending line spooler design is simple to use and can spool both spinning reels and baitcasting reels without line twist. The 3-position clamping system can be adjusted to fit nearly any size rod (0.150 to 1.0 inches in diameter) and tension bands can be adjusted to apply the ideal line tension during the spooling process NO LINE TWIST – The design allows fishing line to come off your filler spool and directly onto the reel spool without any line twist. On a casting reel, the line comes off the top of the filler spool, through the counter, and winds onto the top of a casting reel without changing the coiled memory of the line. For a spinning reel, the line is un-coiled from the filler spool, through the counter, and coiled onto the reel spool. The line naturally coils onto the reel without any twist in the line SPOOLING MADE EASY – Place the tension band on a spool of line, clamp the Kalibrate to a rod, using the threaded t-handle mount spool of line on the tool (maximum spool size – 3.5” wide by 4.5” diameter), attach the fishing line to the reel spool, and fill your fishing reel with your favorite fishing line. Instruction cues on the Kalibrate act as a quick reference to ensure your set up is correct for spinning and casting reels. This fishing equipment is the ideal fishing gift for men and women