This model was designed for some Aluminum Led Bars I had that I wanted to mount to the metal shelf brackets to illuminate my resin cleanup station. The clips are designed to pushfit 12x3mm disc magnets. The Led Bars are approx 9.5mm whide by 5.5mm tall by 12 inches in length, these clips fit very well.

The magnets I used were from Amazon.ca and they worked very well with 3 clips per light

https://www.amazon.ca/TRYMAG-Magnets-Whiteboard-Neodymium-Scientific/dp/B09XJ4SS23?pd_rd_w=3fHle&content-id=amzn1.sym.10abcaa1-f118-465d-98a0-a4b5e0094341&pf_rd_p=10abcaa1-f118-465d-98a0-a4b5e0094341&pf_rd_r=34W1P2YYT0QQ909TP403&pd_rd_wg=5Evu3&pd_rd_r=4688ca28-ba5e-47da-9575-64bb9b3b64c5&pd_rd_i=B09XJ4SS23&ref_=pd_bap_d_grid_rp_0_20_t&th=1