Case provides the ability to snip off the desired length without any waste L.S. STARRETT COMPANY 666-5 Thickness Gauge Stock | WESCO 0.005 Inch Shim Stock Starrett 666S-5 Stainless Steel Thickness Feeler Gage Coil, 0.005" Thickness Feeler Stock Coil Description Starrett 666 series thickness gage or feeler stock in rolls. This handy product includes thickness stock, housed in convenient rewindable dispenser rolls. Having the thickness stock in a case makes it very useful for cutting off the required length for adjusting tappets, spark plugs, distributor points, checking bearing clearances and gear play, fitting pistons, rings and pins... This stock is also useful for shimming in fixturing and die work. Starrett Thickness Gauges or "Feeler" Stock In Rolls, 0.016", Steel - Roll (52813) | Linen Plus Having the thickness stock in a case makes it very useful for cutting off the required length for adjusting tappets, spark plugs, distributor points, checking bearing clearances and gear play, fitting pistons, rings and pins, gaging narrow slots, etc.