For sale are 63 Silencing Rings for Topre-Switch Keyboards, suitable for Happy Hacking Pro 2 Keyboards, giving you 60 rings and 3 to spare.

Precision-cut silencing rings for all Topre-switch keyboards (Happy Hacking Pro 2, Leopold FC660C, Realforce 87U, Realforce 104U, Novatouch)

2=ply construction with impacet-absorbing layer bonded to a tough support layer. Designed to attenuate return=stroke "clack" without noticeably affectin key travel.

Installation: remove sliders from keyboard, slip ring over slider with shiny side up, reinsert slider plus ring into keyboard. Use one ring per switch, including one ring on center of switch for modifier keys.

These rings have been tested in HHK Pro 2 and RF87U keyboards.  Sets of 66, 90 and 104 for smaller or larger keyboards are also available from this seller.

Sold "as is." No returns accepted.  Packed in bubble mailer or priority mailer  between cardboard.  

Illustrations:

2 = Rings alone.

1, 3, 4, 5 = Slider with ring installed (left); Slider without ring (right). SLIDERS NOT INCLUDED