Spool pin cap sponge.

These are peel and stick.

Size  small 1" diameter

Fits many-600, 603, 604, 620, 625, 626, 628, 629, 630, 635, 636, 638, 639, 640, 645, 646, 648, 649, 737, 750, 758, 755, 756, 770, 775, 778, plus many more

# 163149S-2N