How to fit Seiko fat spring bars into an aftermarket rubber strap

Fitting Seiko diver's fat spring bars with an aftermarket rubber strap using a 3mm (1/8in) pin punch tool

You can get the pin punch set on amazon : https://www.amazon.com/Rennsteig-6-Piece-Parallel-Pin-Punch/dp/B0085V5Y9I

The watch is a Seiko chronograph Diver ref SSC021.
You can get it on Amazon : https://www.amazon.com/Seiko-SSC021-Solar-Diver-Chronograph/dp/B006Y9BVRM

or its successor ref SSC613P1 : https://www.amazon.com/Prospex-Divers-Chronograph-Sports-SSC613P1/dp/B074H987NJ

The rubber strap is a 20mm Sharky waffle strap. You can get it on ebay : https://www.ebay.com/itm/Sharky-Mens-Vintage-Reproduction-20mm-Waffle-Strap-6105-Diver-Homage-V2/222921789863

Видео How to fit Seiko fat spring bars into an aftermarket rubber strap канала Around Watches