Grindstone Heartstopper Roller Skate Toe Stops From Grindstone come the original love heart roller skate toe stops - the Heartstoppers! Sold as a pair. Features: Love heart shaped toe stops Aluminium stems - choose from either short or long Imperial thread Size (Stem length): Short stem 17mm, Long stem 32mmColour: Orange Compatible: This is a screw-in stem type toe stop. It is not compatible with skates/plates with a bolt-on toe stop design. Standard imperial threading (will not work with metric equipment/skate parts). Care: Please make sure to lightly grease the stems of your toe stops before screwing them into your plate. This dramatically helps to prevent cross threading as well as the possibility of the toe stop getting stuck in the plate if jammed over time. The imperial thread suits most roller derby skates/popular plates (Sure-Grip, Powerdyne, Pilot, Chuffed, Lolly etc) but if in doubt please ask us before purchasing. Brand: Grindstone