Features: 100% Brand New. Singer double spool lead off 511113-456 2 Pack Spool Pin Cap 511113-456 fits Singer models 4530, 4552, 4572, 4600, 5705, 5710, 5812, 5814, 5816, 5818, 5825, 5830, 5838, 6038, 6200, 7028, 7037, 9005, 9008, 9010, 9410, 57825, CM17, FM17, FM22 and SM14 New replacement spool pin cap. This fits 1/4" pin, outside diameter is about 1 3/4" A spool cap is the piece that attaches to the spool pin, that holds the thread in place and helps the thread properly unwind and not jump around while you're sewing Material: Plastic Diameter: about 43mm/1.69inch Pin hole: 6.2mm/0.25inch Thickness: about 16mm/0.63inch Package list: 2pcs x Spool Pin Cap .
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