Direct from Sigma Switches comes this 260B-1BBNNN SIGMA SWITCHES REPLACEMENT SWITCH SPST BLACK ON OFF. Multiple switches are available. I am the only authorized seller of Sigma Switches on eBay.  Payment will include $7.50 S/H (USA Only). Out of country or overseas shipments will be handled by EBay's shipping policy. Multiple purchase shipping will be on a case by case basis.