The is a mount for a 13mm x 8mm x 33mm Mini Toggle Switch Toggle Screw Diameter 6mm

Similar to: https://www.amazon.com/HiLetgo-AC125V-Terminals-Position-Toggle/dp/B079JBF815?pd_rd_w=XSgFn&pf_rd_p=6b3eefea-7b16-43e9-bc45-2e332cbf99da&pf_rd_r=CTP9X2A2FF7DGQY1N281&pd_rd_r=476706b2-de76-4aa9-bced-d5b56eb7eea7&pd_rd_wg=KJ2uA&pd_rd_i=B079JBF815&psc=1&linkCode=sl1&tag=mobil06afec72-20&linkId=e74a625ae2c56d394de904702bbe9305&language=en_US&ref_=as_li_ss_tl or https://www.amazon.com/HiLetgo-AC125V-Terminals-Position-Toggle/dp/B079JBF815?pd_rd_w=XSgFn&pf_rd_p=6b3eefea-7b16-43e9-bc45-2e332cbf99da&pf_rd_r=CTP9X2A2FF7DGQY1N281&pd_rd_r=476706b2-de76-4aa9-bced-d5b56eb7eea7&pd_rd_wg=KJ2uA&pd_rd_i=B079JBF815&psc=1&linkCode=sl1&tag=mobil06afec72-20&linkId=e74a625ae2c56d394de904702bbe9305&language=en_US&ref_=as_li_ss_tl

Two mounting tabs fit perfectly for Teks #8 x 1/2 in. Lath Screws

Couldn't find one that was rounded for mounting a mini switch under the desk for a strip of LEDs. So this is what i came up with. Did not want to use a "box" with corners on it in case i bump it with my knee and then scrap a corner with it. so this rounded design fits the bill.