Quick view HOROTEC MSA 07.106 (Threaded Watch Case Dies Set) Horotec MSA 07.106 set of 9 screw-on Delrin® dies for fitting snap-on watch case backs. Consists of Ø17mm, Ø19/21mm, Ø22/25mm, Ø26/29mm, Ø30/33mm, Ø34/37mm, Ø38/41mm, Ø42/45mm and... MSRP: Was: Now: $159.00 Add to Cart Compare