Workmate 79-001 Accessories
Black & Decker produced six different accessories for the Workmate 79-001. To quote their brochure: "Black & Decker 'mates' are a hard working team of accessories that make your Workmate even more versatile!"
The swivel grips could be considered the original accessories; four of them were included with the first Workmates in the UK from at least September 1972. They also came with every Workmate 79-001 from its beginning in 1974, and were available separately as part no. 79-010.
The next three accessories--the Mitremate, Gripmate, and Routermate--were created for the U.S. market and introduced starting in 1976. I bought all three of them in 1978 for use with my 79-001 Type 4. The Guidemate came along in 1979, followed by the Horizontal Clamp. My examples of these last two were purchased used during the 2010's.
All but the 79-010 swivel grips have since been discontinued. A lot were sold, so they can all still be found online from eBay, Facebook Marketplace, and Craigslist as well as at garage sales, estate sales, and auctions.
I have owned and used all of the accessories. Check out my reports on them from the links on the left. (Currently, only the first three are complete. The others will be coming soon.)