From wikipedia -
"...In 1962, SK, along with manufacturing partner Lectrolite Corp., of Defiance, OH was bought out by Symington-Wayne. That company was later bought out by Snap-On Tools. In 1985 SK became part of Facom Tools.[5] Following a takeover by Stanley Tools in 2005 of their former parent company, French based Facom Tools, they became independent through a management buyout.[3][6] In June, 2010, the company declared bankruptcy. * On August 23, 2010, it was announced that two days later, on August 25, 2010, Ideal Industries would acquire SK.[7][8] ..."
l see S-K for sale online (amazon, etc). I've got some that I purchased 50 years ago!